Question

Решите:
1) x^2-0.09=0. 2)16c^2-49=0. 3)(3b-2)^2-(b+1)=0

Answer 1

1)x^2-0.09=0
x^2=9/100
x=+-3/10
x1=-3/10
x2=3/10
2)16c^2-49=0
c^2=49/16
c=+-7/4
c1=-7/4
c2=7/4