a*a+15=17

Solution for a*a+15=17 equation:

Simplifying
a * a + 15 = 17

Multiply a * a
a2 + 15 = 17

Reorder the terms:
15 + a2 = 17

Solving
15 + a2 = 17

Solving for variable 'a'.

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

Add '-15' to each side of the equation.
15 + -15 + a2 = 17 + -15

Combine like terms: 15 + -15 = 0
0 + a2 = 17 + -15
a2 = 17 + -15

Combine like terms: 17 + -15 = 2
a2 = 2

Simplifying
a2 = 2

Take the square root of each side:
a = {-1.414213562, 1.414213562}