X^2-8x=-21

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Solution for X^2-8x=-21 equation:


Simplifying
X2 + -8x = -21

Solving
X2 + -8x = -21

Solving for variable 'X'.

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

Add '8x' to each side of the equation.
X2 + -8x + 8x = -21 + 8x

Combine like terms: -8x + 8x = 0
X2 + 0 = -21 + 8x
X2 = -21 + 8x

Simplifying
X2 = -21 + 8x

Reorder the terms:
21 + X2 + -8x = -21 + 8x + 21 + -8x

Reorder the terms:
21 + X2 + -8x = -21 + 21 + 8x + -8x

Combine like terms: -21 + 21 = 0
21 + X2 + -8x = 0 + 8x + -8x
21 + X2 + -8x = 8x + -8x

Combine like terms: 8x + -8x = 0
21 + X2 + -8x = 0

The solution to this equation could not be determined.

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