X^2-21.7=-15.75

Solution for X^2-21.7=-15.75 equation:

Simplifying
X2 + -21.7 = -15.75

Reorder the terms:
-21.7 + X2 = -15.75

Solving
-21.7 + X2 = -15.75

Solving for variable 'X'.

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

Add '21.7' to each side of the equation.
-21.7 + 21.7 + X2 = -15.75 + 21.7

Combine like terms: -21.7 + 21.7 = 0.0
0.0 + X2 = -15.75 + 21.7
X2 = -15.75 + 21.7

Combine like terms: -15.75 + 21.7 = 5.95
X2 = 5.95

Simplifying
X2 = 5.95

Take the square root of each side:
X = {-2.439262184, 2.439262184}