X^2-20x-400=-400

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Solution for X^2-20x-400=-400 equation:


Simplifying
X2 + -20x + -400 = -400

Reorder the terms:
-400 + X2 + -20x = -400

Add '400' to each side of the equation.
-400 + X2 + 400 + -20x = -400 + 400

Reorder the terms:
-400 + 400 + X2 + -20x = -400 + 400

Combine like terms: -400 + 400 = 0
0 + X2 + -20x = -400 + 400
X2 + -20x = -400 + 400

Combine like terms: -400 + 400 = 0
X2 + -20x = 0

Solving
X2 + -20x = 0

Solving for variable 'X'.

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

Add '20x' to each side of the equation.
X2 + -20x + 20x = 0 + 20x

Combine like terms: -20x + 20x = 0
X2 + 0 = 0 + 20x
X2 = 0 + 20x
Remove the zero:
X2 = 20x

Simplifying
X2 = 20x

Combine like terms: 20x + -20x = 0
X2 + -20x = 0

The solution to this equation could not be determined.

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