Question

4x в квадрате - 9 =0

Answer 1

4x^2-9=0
(2x-3)(2x+3)=0
2x-3=0 2x+3=0
2x=0+3 2x=0-3
2x=3 2x=-3
x=3/2 x=-3/2

Answer 2

(2х)²=3²;
2х=3   х=3/2=1,5;
2х= -3  х= -3/2= -1,5.