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Simplifying
x(x + -4) = 36 + -4x
Reorder the terms:
x(-4 + x) = 36 + -4x
(-4 * x + x * x) = 36 + -4x
(-4x + x2) = 36 + -4x
Add '4x' to each side of the equation.
-4x + 4x + x2 = 36 + -4x + 4x
Combine like terms: -4x + 4x = 0
0 + x2 = 36 + -4x + 4x
x2 = 36 + -4x + 4x
Combine like terms: -4x + 4x = 0
x2 = 36 + 0
x2 = 36
Solving
x2 = 36
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Simplifying
x2 = 36
Take the square root of each side:
x = {-6, 6}
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