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Simplifying
x2 + -81 + -5 = 16
Reorder the terms:
-81 + -5 + x2 = 16
Combine like terms: -81 + -5 = -86
-86 + x2 = 16
Solving
-86 + x2 = 16
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '86' to each side of the equation.
-86 + 86 + x2 = 16 + 86
Combine like terms: -86 + 86 = 0
0 + x2 = 16 + 86
x2 = 16 + 86
Combine like terms: 16 + 86 = 102
x2 = 102
Simplifying
x2 = 102
Take the square root of each side:
x = {-10.099504938, 10.099504938}
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