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Simplifying
x2 + 81 = 196
Reorder the terms:
81 + x2 = 196
Solving
81 + x2 = 196
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-81' to each side of the equation.
81 + -81 + x2 = 196 + -81
Combine like terms: 81 + -81 = 0
0 + x2 = 196 + -81
x2 = 196 + -81
Combine like terms: 196 + -81 = 115
x2 = 115
Simplifying
x2 = 115
Take the square root of each side:
x = {-10.723805295, 10.723805295}
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