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Alona [7]
3 years ago
13

Help...i dont know how to solve this X^2- 64

Mathematics
2 answers:
Zielflug [23.3K]3 years ago
3 0

Answer:

x = ±8

Step-by-step explanation:

X^2- 64

Set this equal to 0

x^2 -64 =0

Add 64 to each side

x^2-64+64 = 64+64

x^2 = 64

Take the square root on each side

x = ±sqrt(64)

x = ±8

Marina CMI [18]3 years ago
3 0

Answer:

Step-by-step explanation:

a²-b²=(a+b)(a-b)

x²-64=x²-8²

=(x+8)(x-8)

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