A^2+81=169

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Solution for A^2+81=169 equation: 


Simplifying
A2 + 81 = 169

Reorder the terms:
81 + A2 = 169

Solving
81 + A2 = 169

Solving for variable 'A'.

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

Add '-81' to each side of the equation.
81 + -81 + A2 = 169 + -81

Combine like terms: 81 + -81 = 0
0 + A2 = 169 + -81
A2 = 169 + -81

Combine like terms: 169 + -81 = 88
A2 = 88

Simplifying
A2 = 88

Take the square root of each side:
A = {-9.38083152, 9.38083152}

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