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Simplifying
(x + -2)(x + 2) = 252
Reorder the terms:
(-2 + x)(x + 2) = 252
Reorder the terms:
(-2 + x)(2 + x) = 252
Multiply (-2 + x) * (2 + x)
(-2(2 + x) + x(2 + x)) = 252
((2 * -2 + x * -2) + x(2 + x)) = 252
((-4 + -2x) + x(2 + x)) = 252
(-4 + -2x + (2 * x + x * x)) = 252
(-4 + -2x + (2x + x2)) = 252
Combine like terms: -2x + 2x = 0
(-4 + 0 + x2) = 252
(-4 + x2) = 252
Solving
-4 + x2 = 252
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '4' to each side of the equation.
-4 + 4 + x2 = 252 + 4
Combine like terms: -4 + 4 = 0
0 + x2 = 252 + 4
x2 = 252 + 4
Combine like terms: 252 + 4 = 256
x2 = 256
Simplifying
x2 = 256
Take the square root of each side:
x = {-16, 16}
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