a^2-169=0

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Solution for a^2-169=0 equation: 


Simplifying
a2 + -169 = 0

Reorder the terms:
-169 + a2 = 0

Solving
-169 + a2 = 0

Solving for variable 'a'.

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

Add '169' to each side of the equation.
-169 + 169 + a2 = 0 + 169

Combine like terms: -169 + 169 = 0
0 + a2 = 0 + 169
a2 = 0 + 169

Combine like terms: 0 + 169 = 169
a2 = 169

Simplifying
a2 = 169

Take the square root of each side:
a = {-13, 13}

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