(e + f)*(a - c)*(k + l + m) + (c + d)*(k - m)*(e + d + f) + (d - f)*(l + m)*(a + b + c) - (e + f)*(k - m)*(a + b + c) - (a - c)*(l + m)*(e + d + f) - (b + c)*(d - f)*(k + l + m)
$$\left(a - c\right) \left(f + e\right) \left(k + l + m\right) - \left(a - c\right) \left(l + m\right) \left(d + f + e\right) - \left(b + c\right) \left(d - f\right) \left(k + l + m\right) + \left(c + d\right) \left(k - m\right) \left(d + f + e\right) + \left(d - f\right) \left(l + m\right) \left(a + b + c\right) - \left(f + e\right) \left(k - m\right) \left(a + b + c\right)$$
(E + f)*(a - c)*(k + l + m) + (c + d)*(k - m)*(E + d + f) + (d - f)*(l + m)*(a + b + c) - (E + f)*(k - m)*(a + b + c) - (a - c)*(l + m)*(E + d + f) - (b + c)*(d - f)*(k + l + m)
Рациональный знаменатель
[src]
2 2
k*d - m*d + e*a*m + e*b*m + e*d*k + b*f*m + c*d*l + d*f*k - e*b*k - e*c*k - e*d*m - a*f*l - b*d*k - d*f*m
$$- a f l - b d k + b f m + c d l + d^{2} k - d^{2} m + d f k - d f m + e a m - e b k + e b m - e c k + e d k - e d m$$
k*d^2 - m*d^2 + E*a*m + E*b*m + E*d*k + b*f*m + c*d*l + d*f*k - E*b*k - E*c*k - E*d*m - a*f*l - b*d*k - d*f*m
(2.71828182845905 + f)*(m - k)*(a + b + c) + (b + c)*(f - d)*(k + l + m) + (c - a)*(l + m)*(2.71828182845905 + d + f) - (2.71828182845905 + f)*(c - a)*(k + l + m) - (c + d)*(m - k)*(2.71828182845905 + d + f) - (f - d)*(l + m)*(a + b + c)
(2.71828182845905 + f)*(m - k)*(a + b + c) + (b + c)*(f - d)*(k + l + m) + (c - a)*(l + m)*(2.71828182845905 + d + f) - (2.71828182845905 + f)*(c - a)*(k + l + m) - (c + d)*(m - k)*(2.71828182845905 + d + f) - (f - d)*(l + m)*(a + b + c)
2 2
k*d - m*d + e*a*m + e*b*m + e*d*k + b*f*m + c*d*l + d*f*k - e*b*k - e*c*k - e*d*m - a*f*l - b*d*k - d*f*m
$$- a f l - b d k + b f m + c d l + d^{2} k - d^{2} m + d f k - d f m + e a m - e b k + e b m - e c k + e d k - e d m$$
k*d^2 - m*d^2 + E*a*m + E*b*m + E*d*k + b*f*m + c*d*l + d*f*k - E*b*k - E*c*k - E*d*m - a*f*l - b*d*k - d*f*m
2 2
k*d - m*d + e*a*m + e*b*m + e*d*k + b*f*m + c*d*l + d*f*k - e*b*k - e*c*k - e*d*m - a*f*l - b*d*k - d*f*m
$$- a f l - b d k + b f m + c d l + d^{2} k - d^{2} m + d f k - d f m + e a m - e b k + e b m - e c k + e d k - e d m$$
k*d^2 - m*d^2 + E*a*m + E*b*m + E*d*k + b*f*m + c*d*l + d*f*k - E*b*k - E*c*k - E*d*m - a*f*l - b*d*k - d*f*m