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Simplifying
8x2 + -16 + 64 = 64
Reorder the terms:
-16 + 64 + 8x2 = 64
Combine like terms: -16 + 64 = 48
48 + 8x2 = 64
Solving
48 + 8x2 = 64
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-48' to each side of the equation.
48 + -48 + 8x2 = 64 + -48
Combine like terms: 48 + -48 = 0
0 + 8x2 = 64 + -48
8x2 = 64 + -48
Combine like terms: 64 + -48 = 16
8x2 = 16
Divide each side by '8'.
x2 = 2
Simplifying
x2 = 2
Take the square root of each side:
x = {-1.414213562, 1.414213562}
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