Господин Экзамен

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(d^18+m^18)^2-(d^18-m^18)^2-d^2*m^2 если m=-4

Выражение, которое надо упростить:

Решение

Вы ввели [src]
           2              2        
/ 18    18\    / 18    18\     2  2
\d   + m  /  - \d   - m  /  - d *m 
$$- d^{2} m^{2} - \left(d^{18} - m^{18}\right)^{2} + \left(d^{18} + m^{18}\right)^{2}$$
(d^18 + m^18)^2 - (d^18 - m^18)^2 - d^2*m^2
Общее упрощение [src]
   2  2      18  18
- d *m  + 4*d  *m  
$$4 d^{18} m^{18} - d^{2} m^{2}$$
-d^2*m^2 + 4*d^18*m^18
Разложение на множители [src]
                                                                                                                    /                ___________               ___________\ /                ___________               ___________\ /              ___________               ___________\ /              ___________               ___________\ /                ___________               ___________\ /                ___________               ___________\ /              ___________               ___________\ /              ___________               ___________\                                  
                                                                                                                    |               /       ___               /       ___ | |               /       ___               /       ___ | |             /       ___               /       ___ | |             /       ___               /       ___ | |               /       ___               /       ___ | |               /       ___               /       ___ | |             /       ___               /       ___ | |             /       ___               /       ___ |                                  
                                                                                                                    |       7/8    /  1   \/ 2        7/8    /  1   \/ 2  | |       7/8    /  1   \/ 2        7/8    /  1   \/ 2  | |     7/8    /  1   \/ 2        7/8    /  1   \/ 2  | |     7/8    /  1   \/ 2        7/8    /  1   \/ 2  | |       7/8    /  1   \/ 2        7/8    /  1   \/ 2  | |       7/8    /  1   \/ 2        7/8    /  1   \/ 2  | |     7/8    /  1   \/ 2        7/8    /  1   \/ 2  | |     7/8    /  1   \/ 2        7/8    /  1   \/ 2  |                                  
                                /       3/8      3/8\ /       3/8      3/8\ /     3/8      3/8\ /     3/8      3/8\ |      2   *  /   - - -----    I*2   *  /   - + ----- | |      2   *  /   - - -----    I*2   *  /   - + ----- | |    2   *  /   - - -----    I*2   *  /   - + ----- | |    2   *  /   - - -----    I*2   *  /   - + ----- | |      2   *  /   - + -----    I*2   *  /   - - ----- | |      2   *  /   - + -----    I*2   *  /   - - ----- | |    2   *  /   - + -----    I*2   *  /   - - ----- | |    2   *  /   - + -----    I*2   *  /   - - ----- |                                  
                                |      2      I*2   | |      2      I*2   | |    2      I*2   | |    2      I*2   | |           \/    2     4             \/    2     4   | |           \/    2     4             \/    2     4   | |         \/    2     4             \/    2     4   | |         \/    2     4             \/    2     4   | |           \/    2     4             \/    2     4   | |           \/    2     4             \/    2     4   | |         \/    2     4             \/    2     4   | |         \/    2     4             \/    2     4   |                                  
          /     7/8\ /     7/8\ |    - ---- - ------| |    - ---- + ------| |    ---- - ------| |    ---- + ------| |    - --------------------- - -----------------------| |    - --------------------- + -----------------------| |    --------------------- - -----------------------| |    --------------------- + -----------------------| |    - --------------------- - -----------------------| |    - --------------------- + -----------------------| |    --------------------- - -----------------------| |    --------------------- + -----------------------| /       7/8\ /       7/8\        
          |    2   | |    2   | |       2       2   | |       2       2   | |     2       2   | |     2       2   | |                2                        2           | |                2                        2           | |              2                        2           | |              2                        2           | |                2                        2           | |                2                        2           | |              2                        2           | |              2                        2           | |    I*2   | |    I*2   |        
1*(d + 0)*|d + ----|*|d - ----|*|d - ---------------|*|d - ---------------|*|d - -------------|*|d - -------------|*|d - -------------------------------------------------|*|d - -------------------------------------------------|*|d - -----------------------------------------------|*|d - -----------------------------------------------|*|d - -------------------------------------------------|*|d - -------------------------------------------------|*|d - -----------------------------------------------|*|d - -----------------------------------------------|*|d + ------|*|d - ------|*(m + 0)
          \    2*m / \    2*m / \           m       / \           m       / \          m      / \          m      / \                            m                        / \                            m                        / \                           m                       / \                           m                       / \                            m                        / \                            m                        / \                           m                       / \                           m                       / \     2*m  / \     2*m  /        
$$1 \left(d + 0\right) \left(d + \frac{2^{\frac{7}{8}}}{2 m}\right) \left(d - \frac{2^{\frac{7}{8}}}{2 m}\right) \left(d - \frac{- \frac{2^{\frac{3}{8}}}{2} - \frac{2^{\frac{3}{8}} i}{2}}{m}\right) \left(d - \frac{- \frac{2^{\frac{3}{8}}}{2} + \frac{2^{\frac{3}{8}} i}{2}}{m}\right) \left(d - \frac{\frac{2^{\frac{3}{8}}}{2} - \frac{2^{\frac{3}{8}} i}{2}}{m}\right) \left(d - \frac{\frac{2^{\frac{3}{8}}}{2} + \frac{2^{\frac{3}{8}} i}{2}}{m}\right) \left(d - \frac{- \frac{2^{\frac{7}{8}} \sqrt{- \frac{\sqrt{2}}{4} + \frac{1}{2}}}{2} - \frac{2^{\frac{7}{8}} i \sqrt{\frac{\sqrt{2}}{4} + \frac{1}{2}}}{2}}{m}\right) \left(d - \frac{- \frac{2^{\frac{7}{8}} \sqrt{- \frac{\sqrt{2}}{4} + \frac{1}{2}}}{2} + \frac{2^{\frac{7}{8}} i \sqrt{\frac{\sqrt{2}}{4} + \frac{1}{2}}}{2}}{m}\right) \left(d - \frac{\frac{2^{\frac{7}{8}} \sqrt{- \frac{\sqrt{2}}{4} + \frac{1}{2}}}{2} - \frac{2^{\frac{7}{8}} i \sqrt{\frac{\sqrt{2}}{4} + \frac{1}{2}}}{2}}{m}\right) \left(d - \frac{\frac{2^{\frac{7}{8}} \sqrt{- \frac{\sqrt{2}}{4} + \frac{1}{2}}}{2} + \frac{2^{\frac{7}{8}} i \sqrt{\frac{\sqrt{2}}{4} + \frac{1}{2}}}{2}}{m}\right) \left(d - \frac{- \frac{2^{\frac{7}{8}} \sqrt{\frac{\sqrt{2}}{4} + \frac{1}{2}}}{2} - \frac{2^{\frac{7}{8}} i \sqrt{- \frac{\sqrt{2}}{4} + \frac{1}{2}}}{2}}{m}\right) \left(d - \frac{- \frac{2^{\frac{7}{8}} \sqrt{\frac{\sqrt{2}}{4} + \frac{1}{2}}}{2} + \frac{2^{\frac{7}{8}} i \sqrt{- \frac{\sqrt{2}}{4} + \frac{1}{2}}}{2}}{m}\right) \left(d - \frac{\frac{2^{\frac{7}{8}} \sqrt{\frac{\sqrt{2}}{4} + \frac{1}{2}}}{2} - \frac{2^{\frac{7}{8}} i \sqrt{- \frac{\sqrt{2}}{4} + \frac{1}{2}}}{2}}{m}\right) \left(d - \frac{\frac{2^{\frac{7}{8}} \sqrt{\frac{\sqrt{2}}{4} + \frac{1}{2}}}{2} + \frac{2^{\frac{7}{8}} i \sqrt{- \frac{\sqrt{2}}{4} + \frac{1}{2}}}{2}}{m}\right) \left(d + \frac{2^{\frac{7}{8}} i}{2 m}\right) \left(d - \frac{2^{\frac{7}{8}} i}{2 m}\right) \left(m + 0\right)$$
(((((((((((((((((1*(d + 0))*(d + 2^(7/8)/(2*m)))*(d - 2^(7/8)/(2*m)))*(d - (-2^(3/8)/2 - i*2^(3/8)/2)/m))*(d - (-2^(3/8)/2 + i*2^(3/8)/2)/m))*(d - (2^(3/8)/2 - i*2^(3/8)/2)/m))*(d - (2^(3/8)/2 + i*2^(3/8)/2)/m))*(d - (-2^(7/8)*sqrt(1/2 - sqrt(2)/4)/2 - i*2^(7/8)*sqrt(1/2 + sqrt(2)/4)/2)/m))*(d - (-2^(7/8)*sqrt(1/2 - sqrt(2)/4)/2 + i*2^(7/8)*sqrt(1/2 + sqrt(2)/4)/2)/m))*(d - (2^(7/8)*sqrt(1/2 - sqrt(2)/4)/2 - i*2^(7/8)*sqrt(1/2 + sqrt(2)/4)/2)/m))*(d - (2^(7/8)*sqrt(1/2 - sqrt(2)/4)/2 + i*2^(7/8)*sqrt(1/2 + sqrt(2)/4)/2)/m))*(d - (-2^(7/8)*sqrt(1/2 + sqrt(2)/4)/2 - i*2^(7/8)*sqrt(1/2 - sqrt(2)/4)/2)/m))*(d - (-2^(7/8)*sqrt(1/2 + sqrt(2)/4)/2 + i*2^(7/8)*sqrt(1/2 - sqrt(2)/4)/2)/m))*(d - (2^(7/8)*sqrt(1/2 + sqrt(2)/4)/2 - i*2^(7/8)*sqrt(1/2 - sqrt(2)/4)/2)/m))*(d - (2^(7/8)*sqrt(1/2 + sqrt(2)/4)/2 + i*2^(7/8)*sqrt(1/2 - sqrt(2)/4)/2)/m))*(d + i*2^(7/8)/(2*m)))*(d - i*2^(7/8)/(2*m)))*(m + 0)
Подстановка условия [src]
(d^18 + m^18)^2 - (d^18 - m^18)^2 - d^2*m^2 при m = -4
подставляем
           2              2        
/ 18    18\    / 18    18\     2  2
\d   + m  /  - \d   - m  /  - d *m 
$$- d^{2} m^{2} - \left(d^{18} - m^{18}\right)^{2} + \left(d^{18} + m^{18}\right)^{2}$$
   2  2      18  18
- d *m  + 4*d  *m  
$$4 d^{18} m^{18} - d^{2} m^{2}$$
переменные
m = -4
$$m = -4$$
   2     2      18     18
- d *(-4)  + 4*d  *(-4)  
$$4 (-4)^{18} d^{18} - (-4)^{2} d^{2}$$
   2     2      18     18
- d *(-4)  + 4*d  *(-4)  
$$4 \left(-4\right)^{18} d^{18} - \left(-4\right)^{2} d^{2}$$
      2                 18
- 16*d  + 274877906944*d  
$$274877906944 d^{18} - 16 d^{2}$$
-16*d^2 + 274877906944*d^18
Численный ответ [src]
(d^18 + m^18)^2 - (d^18 - m^18)^2 - d^2*m^2
(d^18 + m^18)^2 - (d^18 - m^18)^2 - d^2*m^2
Комбинаторика [src]
 2  2 /       8  8\ /        8  8\
d *m *\1 + 2*d *m /*\-1 + 2*d *m /
$$d^{2} m^{2} \cdot \left(2 d^{8} m^{8} - 1\right) \left(2 d^{8} m^{8} + 1\right)$$
d^2*m^2*(1 + 2*d^8*m^8)*(-1 + 2*d^8*m^8)
Общий знаменатель [src]
   2  2      18  18
- d *m  + 4*d  *m  
$$4 d^{18} m^{18} - d^{2} m^{2}$$
-d^2*m^2 + 4*d^18*m^18