4a^2-36=

Solution for 4a^2-36= equation:

Simplifying
4a2 + -36 = 0

Reorder the terms:
-36 + 4a2 = 0

Solving
-36 + 4a2 = 0

Solving for variable 'a'.

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

Add '36' to each side of the equation.
-36 + 36 + 4a2 = 0 + 36

Combine like terms: -36 + 36 = 0
0 + 4a2 = 0 + 36
4a2 = 0 + 36

Combine like terms: 0 + 36 = 36
4a2 = 36

Divide each side by '4'.
a2 = 9

Simplifying
a2 = 9

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