x^2+0x-20.25=0

Solution for x^2+0x-20.25=0 equation:

Simplifying
x2 + 0x + -20.25 = 0

Anything times zero is zero.
x2 + 0x + -20.25 = 0

Reorder the terms:
0 + -20.25 + x2 = 0

Combine like terms: 0 + -20.25 = -20.25
-20.25 + x2 = 0

Solving
-20.25 + x2 = 0

Solving for variable 'x'.

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

Add '20.25' to each side of the equation.
-20.25 + 20.25 + x2 = 0 + 20.25

Combine like terms: -20.25 + 20.25 = 0.00
0.00 + x2 = 0 + 20.25
x2 = 0 + 20.25

Combine like terms: 0 + 20.25 = 20.25
x2 = 20.25

Simplifying
x2 = 20.25

Take the square root of each side:
x = {-4.5, 4.5}