Решите уравнения 1) x^2 - 0.01 =0 2) 9x^2 - 4 =0 3) 0.04x^2 - 1 =0

Question

Решите уравнения 1) x^2 - 0.01 =0 2) 9x^2 - 4 =0 3) 0.04x^2 - 1 =0

Answer 1

1) x^2=0.01, x=0,1; x=-0,1
2) 9x^2=4, x=2/3; x=-2/3
3) 0.04x^2=1, x^2=400, x=20; x=-20

Answer 2

1) х^2-0,01=0
х^2=0,01
х=0,1
2)9х^2-4=0
9х^2=4
х^2=4/9
х=2/3
3)0,04х^2-1=0
0,04х^2=1
х^2=1/0,04
х^2=25
х=5