Решите уравнение (2х+5)^2-(2х-3)(2х+1)=4

Question

Решите уравнение (2х+5)^2-(2х-3)(2х+1)=4

Answer 1

(2х+5)^2-(2х-3)(2х+1)=4
4x²+20x+25-(4x²+2x-6x-3)=4
4x²+20x+25-4x²-2x+6x+3=4
24x=4-28
24x=-24|:24
x=-1