(x+5)*(2x-2)=154

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Solution for (x+5)*(2x-2)=154 equation:


Simplifying
(x + 5)(2x + -2) = 154

Reorder the terms:
(5 + x)(2x + -2) = 154

Reorder the terms:
(5 + x)(-2 + 2x) = 154

Multiply (5 + x) * (-2 + 2x)
(5(-2 + 2x) + x(-2 + 2x)) = 154
((-2 * 5 + 2x * 5) + x(-2 + 2x)) = 154
((-10 + 10x) + x(-2 + 2x)) = 154
(-10 + 10x + (-2 * x + 2x * x)) = 154
(-10 + 10x + (-2x + 2x2)) = 154

Combine like terms: 10x + -2x = 8x
(-10 + 8x + 2x2) = 154

Solving
-10 + 8x + 2x2 = 154

Solving for variable 'x'.

Reorder the terms:
-10 + -154 + 8x + 2x2 = 154 + -154

Combine like terms: -10 + -154 = -164
-164 + 8x + 2x2 = 154 + -154

Combine like terms: 154 + -154 = 0
-164 + 8x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-82 + 4x + x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-82 + 4x + x2)' equal to zero and attempt to solve: Simplifying -82 + 4x + x2 = 0 Solving -82 + 4x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '82' to each side of the equation. -82 + 4x + 82 + x2 = 0 + 82 Reorder the terms: -82 + 82 + 4x + x2 = 0 + 82 Combine like terms: -82 + 82 = 0 0 + 4x + x2 = 0 + 82 4x + x2 = 0 + 82 Combine like terms: 0 + 82 = 82 4x + x2 = 82 The x term is 4x. Take half its coefficient (2). Square it (4) and add it to both sides. Add '4' to each side of the equation. 4x + 4 + x2 = 82 + 4 Reorder the terms: 4 + 4x + x2 = 82 + 4 Combine like terms: 82 + 4 = 86 4 + 4x + x2 = 86 Factor a perfect square on the left side: (x + 2)(x + 2) = 86 Calculate the square root of the right side: 9.273618495 Break this problem into two subproblems by setting (x + 2) equal to 9.273618495 and -9.273618495.

Subproblem 1

x + 2 = 9.273618495 Simplifying x + 2 = 9.273618495 Reorder the terms: 2 + x = 9.273618495 Solving 2 + x = 9.273618495 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 9.273618495 + -2 Combine like terms: 2 + -2 = 0 0 + x = 9.273618495 + -2 x = 9.273618495 + -2 Combine like terms: 9.273618495 + -2 = 7.273618495 x = 7.273618495 Simplifying x = 7.273618495

Subproblem 2

x + 2 = -9.273618495 Simplifying x + 2 = -9.273618495 Reorder the terms: 2 + x = -9.273618495 Solving 2 + x = -9.273618495 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = -9.273618495 + -2 Combine like terms: 2 + -2 = 0 0 + x = -9.273618495 + -2 x = -9.273618495 + -2 Combine like terms: -9.273618495 + -2 = -11.273618495 x = -11.273618495 Simplifying x = -11.273618495

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.273618495, -11.273618495}

Solution

x = {7.273618495, -11.273618495}

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