(x-2)(x+4)=x^2-2x+12

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Solution for (x-2)(x+4)=x^2-2x+12 equation:


Simplifying
(x + -2)(x + 4) = x2 + -2x + 12

Reorder the terms:
(-2 + x)(x + 4) = x2 + -2x + 12

Reorder the terms:
(-2 + x)(4 + x) = x2 + -2x + 12

Multiply (-2 + x) * (4 + x)
(-2(4 + x) + x(4 + x)) = x2 + -2x + 12
((4 * -2 + x * -2) + x(4 + x)) = x2 + -2x + 12
((-8 + -2x) + x(4 + x)) = x2 + -2x + 12
(-8 + -2x + (4 * x + x * x)) = x2 + -2x + 12
(-8 + -2x + (4x + x2)) = x2 + -2x + 12

Combine like terms: -2x + 4x = 2x
(-8 + 2x + x2) = x2 + -2x + 12

Reorder the terms:
-8 + 2x + x2 = 12 + -2x + x2

Add '-1x2' to each side of the equation.
-8 + 2x + x2 + -1x2 = 12 + -2x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-8 + 2x + 0 = 12 + -2x + x2 + -1x2
-8 + 2x = 12 + -2x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-8 + 2x = 12 + -2x + 0
-8 + 2x = 12 + -2x

Solving
-8 + 2x = 12 + -2x

Solving for variable 'x'.

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

Add '2x' to each side of the equation.
-8 + 2x + 2x = 12 + -2x + 2x

Combine like terms: 2x + 2x = 4x
-8 + 4x = 12 + -2x + 2x

Combine like terms: -2x + 2x = 0
-8 + 4x = 12 + 0
-8 + 4x = 12

Add '8' to each side of the equation.
-8 + 8 + 4x = 12 + 8

Combine like terms: -8 + 8 = 0
0 + 4x = 12 + 8
4x = 12 + 8

Combine like terms: 12 + 8 = 20
4x = 20

Divide each side by '4'.
x = 5

Simplifying
x = 5

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