Question

rezolva ecuatiile:a) √x=5
b) √x=17
c) 0√x +2=21
d) √x=75

Answer 1

a)✓x=5
✓x^2=5^2
x=25

b) ✓x=17
✓x^2=17^2
x=289

c) 0✓x+2=21
0✓x=21-2
0✓x=19
✓x=19*0
✓x=0
x=0

d) ✓x=75
✓x^2=75^2
x=4275