Question

Решите уравнение:
2х^2-8=0 ; (3х-2)(3х+2)=5х^2

Answer 1

1)2х^2-8=0
2х^2=8
х^2=4
х=2
2)(3х-2)(3х+2)=5х^2
6х^2-4=5х^2
6х^2-5х^2=4
х^2=4
х=2