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

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


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

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

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

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

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

Solving
-6 + -4x + 2x2 = 6

Solving for variable 'x'.

Reorder the terms:
-6 + -6 + -4x + 2x2 = 6 + -6

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

Combine like terms: 6 + -6 = 0
-12 + -4x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-6 + -2x + x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-6 + -2x + x2)' equal to zero and attempt to solve: Simplifying -6 + -2x + x2 = 0 Solving -6 + -2x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '6' to each side of the equation. -6 + -2x + 6 + x2 = 0 + 6 Reorder the terms: -6 + 6 + -2x + x2 = 0 + 6 Combine like terms: -6 + 6 = 0 0 + -2x + x2 = 0 + 6 -2x + x2 = 0 + 6 Combine like terms: 0 + 6 = 6 -2x + x2 = 6 The x term is -2x. Take half its coefficient (-1). Square it (1) and add it to both sides. Add '1' to each side of the equation. -2x + 1 + x2 = 6 + 1 Reorder the terms: 1 + -2x + x2 = 6 + 1 Combine like terms: 6 + 1 = 7 1 + -2x + x2 = 7 Factor a perfect square on the left side: (x + -1)(x + -1) = 7 Calculate the square root of the right side: 2.645751311 Break this problem into two subproblems by setting (x + -1) equal to 2.645751311 and -2.645751311.

Subproblem 1

x + -1 = 2.645751311 Simplifying x + -1 = 2.645751311 Reorder the terms: -1 + x = 2.645751311 Solving -1 + x = 2.645751311 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = 2.645751311 + 1 Combine like terms: -1 + 1 = 0 0 + x = 2.645751311 + 1 x = 2.645751311 + 1 Combine like terms: 2.645751311 + 1 = 3.645751311 x = 3.645751311 Simplifying x = 3.645751311

Subproblem 2

x + -1 = -2.645751311 Simplifying x + -1 = -2.645751311 Reorder the terms: -1 + x = -2.645751311 Solving -1 + x = -2.645751311 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = -2.645751311 + 1 Combine like terms: -1 + 1 = 0 0 + x = -2.645751311 + 1 x = -2.645751311 + 1 Combine like terms: -2.645751311 + 1 = -1.645751311 x = -1.645751311 Simplifying x = -1.645751311

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.645751311, -1.645751311}

Solution

x = {3.645751311, -1.645751311}

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