x^2-4-13=0

Solution for x^2-4-13=0 equation:

Simplifying
x2 + -4 + -13 = 0

Reorder the terms:
-4 + -13 + x2 = 0

Combine like terms: -4 + -13 = -17
-17 + x2 = 0

Solving
-17 + x2 = 0

Solving for variable 'x'.

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

Add '17' to each side of the equation.
-17 + 17 + x2 = 0 + 17

Combine like terms: -17 + 17 = 0
0 + x2 = 0 + 17
x2 = 0 + 17

Combine like terms: 0 + 17 = 17
x2 = 17

Simplifying
x2 = 17

Take the square root of each side:
x = {-4.123105626, 4.123105626}