Ответ:((1-√5)/2);(-1-√5)/2);((1+√5)/2);(-1+√5)/2)
Объяснение:
y'(x) = 6x^2 - 6x - 36 = 0
6(x^2 - x - 6) = 0
6(x - 3)(x + 2) = 0
x1 = -2; y(-2) = 2(-8) - 3*4 - 36(-2) + 40 = -16 - 12 + 72 + 40 = 84
x2 = 3; y(3) = 2*27 - 3*9 - 36*3 + 40 = 54 - 27 - 108 + 40 = -41
8х-2х-4=6х-4
8х-2х-6х=4-4
х=0
2х+3=x-2
3+2=x-2x
5= -x
-10+3=-5-2