9a^2-1=179

Solution for 9a^2-1=179 equation:

Simplifying
9a2 + -1 = 179

Reorder the terms:
-1 + 9a2 = 179

Solving
-1 + 9a2 = 179

Solving for variable 'a'.

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

Add '1' to each side of the equation.
-1 + 1 + 9a2 = 179 + 1

Combine like terms: -1 + 1 = 0
0 + 9a2 = 179 + 1
9a2 = 179 + 1

Combine like terms: 179 + 1 = 180
9a2 = 180

Divide each side by '9'.
a2 = 20

Simplifying
a2 = 20

Take the square root of each side:
a = {-4.472135955, 4.472135955}