x^2-15-54=0

Solution for x^2-15-54=0 equation:

Simplifying
x2 + -15 + -54 = 0

Reorder the terms:
-15 + -54 + x2 = 0

Combine like terms: -15 + -54 = -69
-69 + x2 = 0

Solving
-69 + x2 = 0

Solving for variable 'x'.

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

Add '69' to each side of the equation.
-69 + 69 + x2 = 0 + 69

Combine like terms: -69 + 69 = 0
0 + x2 = 0 + 69
x2 = 0 + 69

Combine like terms: 0 + 69 = 69
x2 = 69

Simplifying
x2 = 69

Take the square root of each side:
x = {-8.306623863, 8.306623863}