x^2+84-520=0

Solution for x^2+84-520=0 equation:

Simplifying
x2 + 84 + -520 = 0

Reorder the terms:
84 + -520 + x2 = 0

Combine like terms: 84 + -520 = -436
-436 + x2 = 0

Solving
-436 + x2 = 0

Solving for variable 'x'.

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

Add '436' to each side of the equation.
-436 + 436 + x2 = 0 + 436

Combine like terms: -436 + 436 = 0
0 + x2 = 0 + 436
x2 = 0 + 436

Combine like terms: 0 + 436 = 436
x2 = 436

Simplifying
x2 = 436

Take the square root of each side:
x = {-20.880613018, 20.880613018}