x(3x-1)+8=(3x+1)(x-5)

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Solution for x(3x-1)+8=(3x+1)(x-5) equation:


Simplifying
x(3x + -1) + 8 = (3x + 1)(x + -5)

Reorder the terms:
x(-1 + 3x) + 8 = (3x + 1)(x + -5)
(-1 * x + 3x * x) + 8 = (3x + 1)(x + -5)
(-1x + 3x2) + 8 = (3x + 1)(x + -5)

Reorder the terms:
8 + -1x + 3x2 = (3x + 1)(x + -5)

Reorder the terms:
8 + -1x + 3x2 = (1 + 3x)(x + -5)

Reorder the terms:
8 + -1x + 3x2 = (1 + 3x)(-5 + x)

Multiply (1 + 3x) * (-5 + x)
8 + -1x + 3x2 = (1(-5 + x) + 3x * (-5 + x))
8 + -1x + 3x2 = ((-5 * 1 + x * 1) + 3x * (-5 + x))
8 + -1x + 3x2 = ((-5 + 1x) + 3x * (-5 + x))
8 + -1x + 3x2 = (-5 + 1x + (-5 * 3x + x * 3x))
8 + -1x + 3x2 = (-5 + 1x + (-15x + 3x2))

Combine like terms: 1x + -15x = -14x
8 + -1x + 3x2 = (-5 + -14x + 3x2)

Add '-3x2' to each side of the equation.
8 + -1x + 3x2 + -3x2 = -5 + -14x + 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
8 + -1x + 0 = -5 + -14x + 3x2 + -3x2
8 + -1x = -5 + -14x + 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
8 + -1x = -5 + -14x + 0
8 + -1x = -5 + -14x

Solving
8 + -1x = -5 + -14x

Solving for variable 'x'.

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

Add '14x' to each side of the equation.
8 + -1x + 14x = -5 + -14x + 14x

Combine like terms: -1x + 14x = 13x
8 + 13x = -5 + -14x + 14x

Combine like terms: -14x + 14x = 0
8 + 13x = -5 + 0
8 + 13x = -5

Add '-8' to each side of the equation.
8 + -8 + 13x = -5 + -8

Combine like terms: 8 + -8 = 0
0 + 13x = -5 + -8
13x = -5 + -8

Combine like terms: -5 + -8 = -13
13x = -13

Divide each side by '13'.
x = -1

Simplifying
x = -1

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