Pls help Solve x²-64 = 0. 1. Isolate x²: x² = 64 2. Apply the square root property of equality: √x²= √64 3. Isolate the variable: X= T x =

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asked Jan 21, 2023 59.9k views

1 Answer

Artemiygrn · Answer 1 · 2023-01-26T09:21:47+0000

Step-by-step explanation:

We simplify the square root of 64 to get 8

√(64) = √(8^2) = 8

Then we'll have the plus minus out front to say

$x = \pm √(64) = \pm 8$

That breaks down into x = 8 or x = -8

As a check

x^2 = (8)^2 = 8*8 = 64

x^2 = (-8)^2 = (-8)*(-8) = 64

Both values lead to 64 when squaring.