(x+6)(x-2)=x(x+1)

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Solution for (x+6)(x-2)=x(x+1) equation:


Simplifying
(x + 6)(x + -2) = x(x + 1)

Reorder the terms:
(6 + x)(x + -2) = x(x + 1)

Reorder the terms:
(6 + x)(-2 + x) = x(x + 1)

Multiply (6 + x) * (-2 + x)
(6(-2 + x) + x(-2 + x)) = x(x + 1)
((-2 * 6 + x * 6) + x(-2 + x)) = x(x + 1)
((-12 + 6x) + x(-2 + x)) = x(x + 1)
(-12 + 6x + (-2 * x + x * x)) = x(x + 1)
(-12 + 6x + (-2x + x2)) = x(x + 1)

Combine like terms: 6x + -2x = 4x
(-12 + 4x + x2) = x(x + 1)

Reorder the terms:
-12 + 4x + x2 = x(1 + x)
-12 + 4x + x2 = (1 * x + x * x)
-12 + 4x + x2 = (1x + x2)

Add '-1x2' to each side of the equation.
-12 + 4x + x2 + -1x2 = 1x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-12 + 4x + 0 = 1x + x2 + -1x2
-12 + 4x = 1x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-12 + 4x = 1x + 0
-12 + 4x = 1x

Solving
-12 + 4x = 1x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
-12 + 4x + -1x = 1x + -1x

Combine like terms: 4x + -1x = 3x
-12 + 3x = 1x + -1x

Combine like terms: 1x + -1x = 0
-12 + 3x = 0

Add '12' to each side of the equation.
-12 + 12 + 3x = 0 + 12

Combine like terms: -12 + 12 = 0
0 + 3x = 0 + 12
3x = 0 + 12

Combine like terms: 0 + 12 = 12
3x = 12

Divide each side by '3'.
x = 4

Simplifying
x = 4

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