81+a^2=1681

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Solution for 81+a^2=1681 equation: 


Simplifying
81 + a2 = 1681

Solving
81 + a2 = 1681

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 = 1681 + -81

Combine like terms: 81 + -81 = 0
0 + a2 = 1681 + -81
a2 = 1681 + -81

Combine like terms: 1681 + -81 = 1600
a2 = 1600

Simplifying
a2 = 1600

Take the square root of each side:
a = {-40, 40}

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