Разложение на множители
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/ _____\ / _____\ / ____\ / ____\
| ____ / 3 | | ____ / 3 | | ____ / 3 | | ____ / 3 |
| \/ 21 *\/ -n | | \/ 21 *\/ -n | | \/ 21 *\/ n | | \/ 21 *\/ n |
1*|m + ---------------|*|m - ---------------|*|m + --------------|*|m - --------------|
\ 7 / \ 7 / \ 7 / \ 7 /
$$\left(m - \frac{\sqrt{21} \sqrt{- n^{3}}}{7}\right) 1 \left(m + \frac{\sqrt{21} \sqrt{- n^{3}}}{7}\right) \left(m + \frac{\sqrt{21} \sqrt{n^{3}}}{7}\right) \left(m - \frac{\sqrt{21} \sqrt{n^{3}}}{7}\right)$$
(((1*(m + sqrt(21)*sqrt(-n^3)/7))*(m - sqrt(21)*sqrt(-n^3)/7))*(m + sqrt(21)*sqrt(n^3)/7))*(m - sqrt(21)*sqrt(n^3)/7)
Подстановка условия
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(7*m^2 - 3*n^3)*(7*m^2 + 3*n^3) при m = -1/4
/ 2 3\ / 2 3\
\7*m - 3*n /*\7*m + 3*n /
$$\left(3 n^{3} + 7 m^{2}\right) \left(- 3 n^{3} + 7 m^{2}\right)$$
$$- 9 n^{6} + 49 m^{4}$$
$$m = - \frac{1}{4}$$
$$- 9 n^{6} + 49 (-1/4)^{4}$$
$$- 9 n^{6} + \frac{49}{256}$$
(3.0*n^3 + 7.0*m^2)*(7.0*m^2 - 3.0*n^3)
(3.0*n^3 + 7.0*m^2)*(7.0*m^2 - 3.0*n^3)
Рациональный знаменатель
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$$- 9 n^{6} + 49 m^{4}$$
/ 3 2\ / 3 2\
\- 3*n + 7*m /*\3*n + 7*m /
$$\left(- 3 n^{3} + 7 m^{2}\right) \left(3 n^{3} + 7 m^{2}\right)$$
(-3*n^3 + 7*m^2)*(3*n^3 + 7*m^2)
/ 3 2\ / 3 2\
\- 3*n + 7*m /*\3*n + 7*m /
$$\left(- 3 n^{3} + 7 m^{2}\right) \left(3 n^{3} + 7 m^{2}\right)$$
(-3*n^3 + 7*m^2)*(3*n^3 + 7*m^2)
/ 3 2\ / 3 2\
\- 3*n + 7*m /*\3*n + 7*m /
$$\left(- 3 n^{3} + 7 m^{2}\right) \left(3 n^{3} + 7 m^{2}\right)$$
(-3*n^3 + 7*m^2)*(3*n^3 + 7*m^2)
Объединение рациональных выражений
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/ 3 2\ / 3 2\
\- 3*n + 7*m /*\3*n + 7*m /
$$\left(- 3 n^{3} + 7 m^{2}\right) \left(3 n^{3} + 7 m^{2}\right)$$
(-3*n^3 + 7*m^2)*(3*n^3 + 7*m^2)
/ 3 2\ / 3 2\
\- 3*n + 7*m /*\3*n + 7*m /
$$\left(- 3 n^{3} + 7 m^{2}\right) \left(3 n^{3} + 7 m^{2}\right)$$
(-3*n^3 + 7*m^2)*(3*n^3 + 7*m^2)