Respuesta :

ktreyb
x² - 64 = 0
(x - 8)(x + 8) = 0

x = - 8, 8

Your other solution is - 8
Step 1: Add 64 to both sides.
x2
−64
+64
=0+64

x2
=64

Step 2: Take square root.
x=±√64

x=8 or x
=−8

Answer:x=8 or x=8

Hope this helps :D