Подстановка условия
[src]((3*x^2)*(-2*x + 3))*(5 - x) при x = -1/4
((3*x^2)*(-2*x + 3))*(5 - x)
$$3 x^{2} \left(- 2 x + 3\right) \left(- x + 5\right)$$
((3*(-1/4)^2)*(-2*(-1/4) + 3))*(5 - (-1/4))
$$3 (-1/4)^{2} \left(- 2 (-1/4) + 3\right) \left(- (-1/4) + 5\right)$$
((3*(-1/4)^2)*(-(-1)/2 + 3))*(5 - (-1)/4)
$$3 \left(- \frac{1}{4}\right)^{2} \left(- \frac{-1}{2} + 3\right) \left(- \frac{-1}{4} + 5\right)$$