2(x+5)(x-2)=190

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Solution for 2(x+5)(x-2)=190 equation:


Simplifying
2(x + 5)(x + -2) = 190

Reorder the terms:
2(5 + x)(x + -2) = 190

Reorder the terms:
2(5 + x)(-2 + x) = 190

Multiply (5 + x) * (-2 + x)
2(5(-2 + x) + x(-2 + x)) = 190
2((-2 * 5 + x * 5) + x(-2 + x)) = 190
2((-10 + 5x) + x(-2 + x)) = 190
2(-10 + 5x + (-2 * x + x * x)) = 190
2(-10 + 5x + (-2x + x2)) = 190

Combine like terms: 5x + -2x = 3x
2(-10 + 3x + x2) = 190
(-10 * 2 + 3x * 2 + x2 * 2) = 190
(-20 + 6x + 2x2) = 190

Solving
-20 + 6x + 2x2 = 190

Solving for variable 'x'.

Reorder the terms:
-20 + -190 + 6x + 2x2 = 190 + -190

Combine like terms: -20 + -190 = -210
-210 + 6x + 2x2 = 190 + -190

Combine like terms: 190 + -190 = 0
-210 + 6x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-105 + 3x + x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-105 + 3x + x2)' equal to zero and attempt to solve: Simplifying -105 + 3x + x2 = 0 Solving -105 + 3x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '105' to each side of the equation. -105 + 3x + 105 + x2 = 0 + 105 Reorder the terms: -105 + 105 + 3x + x2 = 0 + 105 Combine like terms: -105 + 105 = 0 0 + 3x + x2 = 0 + 105 3x + x2 = 0 + 105 Combine like terms: 0 + 105 = 105 3x + x2 = 105 The x term is 3x. Take half its coefficient (1.5). Square it (2.25) and add it to both sides. Add '2.25' to each side of the equation. 3x + 2.25 + x2 = 105 + 2.25 Reorder the terms: 2.25 + 3x + x2 = 105 + 2.25 Combine like terms: 105 + 2.25 = 107.25 2.25 + 3x + x2 = 107.25 Factor a perfect square on the left side: (x + 1.5)(x + 1.5) = 107.25 Calculate the square root of the right side: 10.356157589 Break this problem into two subproblems by setting (x + 1.5) equal to 10.356157589 and -10.356157589.

Subproblem 1

x + 1.5 = 10.356157589 Simplifying x + 1.5 = 10.356157589 Reorder the terms: 1.5 + x = 10.356157589 Solving 1.5 + x = 10.356157589 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = 10.356157589 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 10.356157589 + -1.5 x = 10.356157589 + -1.5 Combine like terms: 10.356157589 + -1.5 = 8.856157589 x = 8.856157589 Simplifying x = 8.856157589

Subproblem 2

x + 1.5 = -10.356157589 Simplifying x + 1.5 = -10.356157589 Reorder the terms: 1.5 + x = -10.356157589 Solving 1.5 + x = -10.356157589 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = -10.356157589 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -10.356157589 + -1.5 x = -10.356157589 + -1.5 Combine like terms: -10.356157589 + -1.5 = -11.856157589 x = -11.856157589 Simplifying x = -11.856157589

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.856157589, -11.856157589}

Solution

x = {8.856157589, -11.856157589}

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