x^2-78-15=0

Solution for x^2-78-15=0 equation:

Simplifying
x2 + -78 + -15 = 0

Reorder the terms:
-78 + -15 + x2 = 0

Combine like terms: -78 + -15 = -93
-93 + x2 = 0

Solving
-93 + x2 = 0

Solving for variable 'x'.

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

Add '93' to each side of the equation.
-93 + 93 + x2 = 0 + 93

Combine like terms: -93 + 93 = 0
0 + x2 = 0 + 93
x2 = 0 + 93

Combine like terms: 0 + 93 = 93
x2 = 93

Simplifying
x2 = 93

Take the square root of each side:
x = {-9.643650761, 9.643650761}