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Simplifying
x2 + 12x + -36 = 12x
Reorder the terms:
-36 + 12x + x2 = 12x
Add '-12x' to each side of the equation.
-36 + 12x + -12x + x2 = 12x + -12x
Combine like terms: 12x + -12x = 0
-36 + 0 + x2 = 12x + -12x
-36 + x2 = 12x + -12x
Combine like terms: 12x + -12x = 0
-36 + x2 = 0
Solving
-36 + x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '36' to each side of the equation.
-36 + 36 + x2 = 0 + 36
Combine like terms: -36 + 36 = 0
0 + x2 = 0 + 36
x2 = 0 + 36
Combine like terms: 0 + 36 = 36
x2 = 36
Simplifying
x2 = 36
Take the square root of each side:
x = {-6, 6}
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