x*x+15=30

Solution for x*x+15=30 equation:

Simplifying
x * x + 15 = 30

Multiply x * x
x2 + 15 = 30

Reorder the terms:
15 + x2 = 30

Solving
15 + x2 = 30

Solving for variable 'x'.

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

Add '-15' to each side of the equation.
15 + -15 + x2 = 30 + -15

Combine like terms: 15 + -15 = 0
0 + x2 = 30 + -15
x2 = 30 + -15

Combine like terms: 30 + -15 = 15
x2 = 15

Simplifying
x2 = 15

Take the square root of each side:
x = {-3.872983346, 3.872983346}