a^2+144=15*15

Solution for a^2+144=15*15 equation:

Simplifying
a2 + 144 = 15 * 15

Reorder the terms:
144 + a2 = 15 * 15

Multiply 15 * 15
144 + a2 = 225

Solving
144 + a2 = 225

Solving for variable 'a'.

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

Add '-144' to each side of the equation.
144 + -144 + a2 = 225 + -144

Combine like terms: 144 + -144 = 0
0 + a2 = 225 + -144
a2 = 225 + -144

Combine like terms: 225 + -144 = 81
a2 = 81

Simplifying
a2 = 81

Take the square root of each side:
a = {-9, 9}