x^2-21-49=0

Solution for x^2-21-49=0 equation:

Simplifying
x2 + -21 + -49 = 0

Reorder the terms:
-21 + -49 + x2 = 0

Combine like terms: -21 + -49 = -70
-70 + x2 = 0

Solving
-70 + x2 = 0

Solving for variable 'x'.

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

Add '70' to each side of the equation.
-70 + 70 + x2 = 0 + 70

Combine like terms: -70 + 70 = 0
0 + x2 = 0 + 70
x2 = 0 + 70

Combine like terms: 0 + 70 = 70
x2 = 70

Simplifying
x2 = 70

Take the square root of each side:
x = {-8.366600265, 8.366600265}