Question

1. x^2=9
2. x^2=1
3. x^2=4
4. x^=--16
5. x^2=36
6. x^2=--25
7. x^2=0
8. 2x^2=32
9. x^2=100
3x^2=75

Answer 1

1.x=+-3
2.x=+-1
3.x=+-2
4.nu exista x
5.x=+-4
6.nu exista x care să satisfacă ecuația
7.x=0
8.x^2=32:2
x^2=16
x=+-4
9.x=+-10
10.x^2=75:3
x^2=25
x=+-5