X^2+8x=12x+21

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Solution for X^2+8x=12x+21 equation: 


Simplifying
X2 + 8x = 12x + 21

Reorder the terms:
X2 + 8x = 21 + 12x

Solving
X2 + 8x = 21 + 12x

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 + 12x + -8x

Combine like terms: 8x + -8x = 0
X2 + 0 = 21 + 12x + -8x
X2 = 21 + 12x + -8x

Combine like terms: 12x + -8x = 4x
X2 = 21 + 4x

Simplifying
X2 = 21 + 4x

Reorder the terms:
-21 + X2 + -4x = 21 + 4x + -21 + -4x

Reorder the terms:
-21 + X2 + -4x = 21 + -21 + 4x + -4x

Combine like terms: 21 + -21 = 0
-21 + X2 + -4x = 0 + 4x + -4x
-21 + X2 + -4x = 4x + -4x

Combine like terms: 4x + -4x = 0
-21 + X2 + -4x = 0

The solution to this equation could not be determined.

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