X+(x+8)(x)=120

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Solution for X+(x+8)(x)=120 equation: 


Simplifying
X + (x + 8)(x) = 120

Reorder the terms:
X + (8 + x)(x) = 120

Reorder the terms for easier multiplication:
X + x(8 + x) = 120
X + (8 * x + x * x) = 120
X + (8x + x2) = 120

Solving
X + 8x + x2 = 120

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.
X + 8x + -8x + x2 = 120 + -8x

Combine like terms: 8x + -8x = 0
X + 0 + x2 = 120 + -8x
X + x2 = 120 + -8x

Add '-1x2' to each side of the equation.
X + x2 + -1x2 = 120 + -8x + -1x2

Combine like terms: x2 + -1x2 = 0
X + 0 = 120 + -8x + -1x2
X = 120 + -8x + -1x2

Simplifying
X = 120 + -8x + -1x2

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