Question

COMO RESOLVE X^2 - 64=0

Answer 1

x²-64=0
Aplicando Bháskara:
A=1 B=0 C=-64
0+- raiz de delta
____________
2
Delta = 256
Logo
+- Raiz de 256
____________
2
Raiz de 256 = 16
X1= 8
X2=-8

S:{8,-8}

Answer 2

X"2= 64
X = +- 8

Espero ter ajudado