-x^2=-81

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Solution for -x^2=-81 equation:


Simplifying
-1x2 = -81

Solving
-1x2 = -81

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Divide each side by '-1'.
x2 = 81

Simplifying
x2 = 81

Take the square root of each side:
x = {-9, 9}

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