Question

решите уравнение, заранее спасибо

Answer 1

(2х+5)²-(2х-3)(2х+1)=4
4х²+20х+25-4х²-2х+6х+3-4=0
24х=-24
х=-1

Answer 2

(2х+5)^2-(2х-3)(2х+1)=4
(а+b)^2=a^2+2ab+b^2
4x^2+20x+25-4x^2-2x+6x+3-4=0
24x+24=0
24x=-24
x=-24÷24
x=-1