Question

Помогите 5-2x=4-4x+x^2

Answer 1

x^2 - 4x + 2x + 4 - 5 = 0

D = 2^2 - 4 * (-1) = 4+4 = 8

x1 = (4 + корень_из_D) / 2
x2 = (4 - корень_из_D) / 2