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Simplifying
39 = -10 + x2
Solving
39 = -10 + x2
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-1x2' to each side of the equation.
39 + -1x2 = -10 + x2 + -1x2
Combine like terms: x2 + -1x2 = 0
39 + -1x2 = -10 + 0
39 + -1x2 = -10
Add '-39' to each side of the equation.
39 + -39 + -1x2 = -10 + -39
Combine like terms: 39 + -39 = 0
0 + -1x2 = -10 + -39
-1x2 = -10 + -39
Combine like terms: -10 + -39 = -49
-1x2 = -49
Divide each side by '-1'.
x2 = 49
Simplifying
x2 = 49
Take the square root of each side:
x = {-7, 7}
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