Question

Решите уравнение
(Х-3)(5+2х)=2(х-1)^2

Answer 1

(Х-3)(5+2х)=2(х-1)^2
5x - 15 + 2x^2 - 6x = 2(x^2 - 2x + 1)
-x -15 + 2x^2 = 2x^2 - 4x + 2
-x + 2x^2 - 2x^2 + 4x = 15 + 2
3x = 17
x = 17/3
x = 5 2/3

Answer 2

(х – 3)(5 + 2х) = 2(х – 1)^2
5 х + 2х2 – 15 – 5х = 2 х2 -4х + 2
-х + 4х = 2 + 15
3х = 17
Х = 17/3.