Question

A) x² = 64
B) 9x² - 9 = 0
C) 12x² = 48
D) x² = 5
E) x² + 81 = 0

Answer 1

a) x=8

b) x=1

c) x=2

d) x= ✓5

e) x= -81 (essa eu nao tenho certeza)