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Simplifying
x2 + -5 = 139
Reorder the terms:
-5 + x2 = 139
Solving
-5 + x2 = 139
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '5' to each side of the equation.
-5 + 5 + x2 = 139 + 5
Combine like terms: -5 + 5 = 0
0 + x2 = 139 + 5
x2 = 139 + 5
Combine like terms: 139 + 5 = 144
x2 = 144
Simplifying
x2 = 144
Take the square root of each side:
x = {-12, 12}
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