Question

Решите уравнение пж (2x+5)в квадрате - (2x-3)(2x+1)=4

Answer 1

(2х-5)²-(2х-3)(2х+1)=4

4х²+20х+25-4х²+6х-2х+3-4=0

24х=-24

х=-1.

Answer 2

4х^2+20x+25-(4x^2+2x-6x-3)=4

4х^2+20x+25-4x^2-2x+6x+3=4

24x=4-25-3

24x=-24

x=-24/24

x=-1