Rezolvați ecuațiile :
1.f) x^2=40
g) x^2=0
h) x^2=-20

2.d) x^2=225/900
f) x^2= - 1/625
g) x^2=7/150

3.c) x^2=V5

4.b) (x-4) ^2=64
d) (x+9) ^2=12

5.c) (4x+1)^2=9/4


^ = la puterea a 2a
V= radical
/=supra ​