2x^2+20x-200=0

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Solution for 2x^2+20x-200=0 equation:


Simplifying
2x2 + 20x + -200 = 0

Reorder the terms:
-200 + 20x + 2x2 = 0

Solving
-200 + 20x + 2x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-100 + 10x + x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-100 + 10x + x2)' equal to zero and attempt to solve: Simplifying -100 + 10x + x2 = 0 Solving -100 + 10x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '100' to each side of the equation. -100 + 10x + 100 + x2 = 0 + 100 Reorder the terms: -100 + 100 + 10x + x2 = 0 + 100 Combine like terms: -100 + 100 = 0 0 + 10x + x2 = 0 + 100 10x + x2 = 0 + 100 Combine like terms: 0 + 100 = 100 10x + x2 = 100 The x term is 10x. Take half its coefficient (5). Square it (25) and add it to both sides. Add '25' to each side of the equation. 10x + 25 + x2 = 100 + 25 Reorder the terms: 25 + 10x + x2 = 100 + 25 Combine like terms: 100 + 25 = 125 25 + 10x + x2 = 125 Factor a perfect square on the left side: (x + 5)(x + 5) = 125 Calculate the square root of the right side: 11.180339887 Break this problem into two subproblems by setting (x + 5) equal to 11.180339887 and -11.180339887.

Subproblem 1

x + 5 = 11.180339887 Simplifying x + 5 = 11.180339887 Reorder the terms: 5 + x = 11.180339887 Solving 5 + x = 11.180339887 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = 11.180339887 + -5 Combine like terms: 5 + -5 = 0 0 + x = 11.180339887 + -5 x = 11.180339887 + -5 Combine like terms: 11.180339887 + -5 = 6.180339887 x = 6.180339887 Simplifying x = 6.180339887

Subproblem 2

x + 5 = -11.180339887 Simplifying x + 5 = -11.180339887 Reorder the terms: 5 + x = -11.180339887 Solving 5 + x = -11.180339887 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = -11.180339887 + -5 Combine like terms: 5 + -5 = 0 0 + x = -11.180339887 + -5 x = -11.180339887 + -5 Combine like terms: -11.180339887 + -5 = -16.180339887 x = -16.180339887 Simplifying x = -16.180339887

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.180339887, -16.180339887}

Solution

x = {6.180339887, -16.180339887}

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