2x(x-4)=(x+1)(x-4)

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Solution for 2x(x-4)=(x+1)(x-4) equation: 


Simplifying
2x(x + -4) = (x + 1)(x + -4)

Reorder the terms:
2x(-4 + x) = (x + 1)(x + -4)
(-4 * 2x + x * 2x) = (x + 1)(x + -4)
(-8x + 2x2) = (x + 1)(x + -4)

Reorder the terms:
-8x + 2x2 = (1 + x)(x + -4)

Reorder the terms:
-8x + 2x2 = (1 + x)(-4 + x)

Multiply (1 + x) * (-4 + x)
-8x + 2x2 = (1(-4 + x) + x(-4 + x))
-8x + 2x2 = ((-4 * 1 + x * 1) + x(-4 + x))
-8x + 2x2 = ((-4 + 1x) + x(-4 + x))
-8x + 2x2 = (-4 + 1x + (-4 * x + x * x))
-8x + 2x2 = (-4 + 1x + (-4x + x2))

Combine like terms: 1x + -4x = -3x
-8x + 2x2 = (-4 + -3x + x2)

Solving
-8x + 2x2 = -4 + -3x + x2

Solving for variable 'x'.

Reorder the terms:
4 + -8x + 3x + 2x2 + -1x2 = -4 + -3x + x2 + 4 + 3x + -1x2

Combine like terms: -8x + 3x = -5x
4 + -5x + 2x2 + -1x2 = -4 + -3x + x2 + 4 + 3x + -1x2

Combine like terms: 2x2 + -1x2 = 1x2
4 + -5x + 1x2 = -4 + -3x + x2 + 4 + 3x + -1x2

Reorder the terms:
4 + -5x + 1x2 = -4 + 4 + -3x + 3x + x2 + -1x2

Combine like terms: -4 + 4 = 0
4 + -5x + 1x2 = 0 + -3x + 3x + x2 + -1x2
4 + -5x + 1x2 = -3x + 3x + x2 + -1x2

Combine like terms: -3x + 3x = 0
4 + -5x + 1x2 = 0 + x2 + -1x2
4 + -5x + 1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
4 + -5x + 1x2 = 0

Factor a trinomial.
(1 + -1x)(4 + -1x) = 0


Subproblem 1
Set the factor '(1 + -1x)' equal to zero and attempt to solve:

Simplifying
1 + -1x = 0

Solving
1 + -1x = 0

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

Add '-1' to each side of the equation.
1 + -1 + -1x = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -1x = 0 + -1
-1x = 0 + -1

Combine like terms: 0 + -1 = -1
-1x = -1

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

Simplifying
x = 1

Subproblem 2
Set the factor '(4 + -1x)' equal to zero and attempt to solve:

Simplifying
4 + -1x = 0

Solving
4 + -1x = 0

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

Add '-4' to each side of the equation.
4 + -4 + -1x = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -1x = 0 + -4
-1x = 0 + -4

Combine like terms: 0 + -4 = -4
-1x = -4

Divide each side by '-1'.
x = 4

Simplifying
x = 4
Solution
x = {1, 4}

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