A^2-9=27

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Solution for A^2-9=27 equation: 


Simplifying
A2 + -9 = 27

Reorder the terms:
-9 + A2 = 27

Solving
-9 + A2 = 27

Solving for variable 'A'.

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

Add '9' to each side of the equation.
-9 + 9 + A2 = 27 + 9

Combine like terms: -9 + 9 = 0
0 + A2 = 27 + 9
A2 = 27 + 9

Combine like terms: 27 + 9 = 36
A2 = 36

Simplifying
A2 = 36

Take the square root of each side:
A = {-6, 6}

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