a*a+225=289

Solution for a*a+225=289 equation:

Simplifying
a * a + 225 = 289

Multiply a * a
a2 + 225 = 289

Reorder the terms:
225 + a2 = 289

Solving
225 + a2 = 289

Solving for variable 'a'.

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

Add '-225' to each side of the equation.
225 + -225 + a2 = 289 + -225

Combine like terms: 225 + -225 = 0
0 + a2 = 289 + -225
a2 = 289 + -225

Combine like terms: 289 + -225 = 64
a2 = 64

Simplifying
a2 = 64

Take the square root of each side:
a = {-8, 8}