9-a^2=0

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Solution for 9-a^2=0 equation: 


Simplifying
9 + -1a2 = 0

Solving
9 + -1a2 = 0

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 + -1a2 = 0 + -9

Combine like terms: 9 + -9 = 0
0 + -1a2 = 0 + -9
-1a2 = 0 + -9

Combine like terms: 0 + -9 = -9
-1a2 = -9

Divide each side by '-1'.
a2 = 9

Simplifying
a2 = 9

Take the square root of each side:
a = {-3, 3}

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