Question

решите уравнение 4x^2-25=0

Answer 1

4x^2-25=0,раскладываем на множители:

(2х-5)(2х+5)=0

2х-5=0                              или                                 2х+5=0

2х=5                                                                         2х=-5

х=2,5                                                                         х=-2,5

Answer 2

4x^2-25=0 4x^2=25 X^2=25/4 X= +,- 5-2 X=+,-2,5