Question

Решмте уравнения:
1. x^2-25=0
2. 1/16-x^2=0
3. 9х^2-4=0

Answer 1

1) (x-5)(x+5)=0
x1=5, x2= -5

2) (1/4-x)(1/4+x)=0
-x=-1/4, x1=1/4, x2= -1/4

3) (3x-2)(3x+2)=0
3x=2, x1=2/3, x2= -2/3