X^2-9x-400=0

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Solution for X^2-9x-400=0 equation:


Simplifying
X2 + -9x + -400 = 0

Reorder the terms:
-400 + X2 + -9x = 0

Solving
-400 + X2 + -9x = 0

Solving for variable 'X'.

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

Add '400' to each side of the equation.
-400 + X2 + 400 + -9x = 0 + 400

Reorder the terms:
-400 + 400 + X2 + -9x = 0 + 400

Combine like terms: -400 + 400 = 0
0 + X2 + -9x = 0 + 400
X2 + -9x = 0 + 400

Combine like terms: 0 + 400 = 400
X2 + -9x = 400

Add '9x' to each side of the equation.
X2 + -9x + 9x = 400 + 9x

Combine like terms: -9x + 9x = 0
X2 + 0 = 400 + 9x
X2 = 400 + 9x

Simplifying
X2 = 400 + 9x

Reorder the terms:
-400 + X2 + -9x = 400 + 9x + -400 + -9x

Reorder the terms:
-400 + X2 + -9x = 400 + -400 + 9x + -9x

Combine like terms: 400 + -400 = 0
-400 + X2 + -9x = 0 + 9x + -9x
-400 + X2 + -9x = 9x + -9x

Combine like terms: 9x + -9x = 0
-400 + X2 + -9x = 0

The solution to this equation could not be determined.

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