5x^2+55x+120=5

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Solution for 5x^2+55x+120=5 equation:


Simplifying
5x2 + 55x + 120 = 5

Reorder the terms:
120 + 55x + 5x2 = 5

Solving
120 + 55x + 5x2 = 5

Solving for variable 'x'.

Reorder the terms:
120 + -5 + 55x + 5x2 = 5 + -5

Combine like terms: 120 + -5 = 115
115 + 55x + 5x2 = 5 + -5

Combine like terms: 5 + -5 = 0
115 + 55x + 5x2 = 0

Factor out the Greatest Common Factor (GCF), '5'.
5(23 + 11x + x2) = 0

Ignore the factor 5.

Subproblem 1

Set the factor '(23 + 11x + x2)' equal to zero and attempt to solve: Simplifying 23 + 11x + x2 = 0 Solving 23 + 11x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-23' to each side of the equation. 23 + 11x + -23 + x2 = 0 + -23 Reorder the terms: 23 + -23 + 11x + x2 = 0 + -23 Combine like terms: 23 + -23 = 0 0 + 11x + x2 = 0 + -23 11x + x2 = 0 + -23 Combine like terms: 0 + -23 = -23 11x + x2 = -23 The x term is 11x. Take half its coefficient (5.5). Square it (30.25) and add it to both sides. Add '30.25' to each side of the equation. 11x + 30.25 + x2 = -23 + 30.25 Reorder the terms: 30.25 + 11x + x2 = -23 + 30.25 Combine like terms: -23 + 30.25 = 7.25 30.25 + 11x + x2 = 7.25 Factor a perfect square on the left side: (x + 5.5)(x + 5.5) = 7.25 Calculate the square root of the right side: 2.692582404 Break this problem into two subproblems by setting (x + 5.5) equal to 2.692582404 and -2.692582404.

Subproblem 1

x + 5.5 = 2.692582404 Simplifying x + 5.5 = 2.692582404 Reorder the terms: 5.5 + x = 2.692582404 Solving 5.5 + x = 2.692582404 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5.5' to each side of the equation. 5.5 + -5.5 + x = 2.692582404 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + x = 2.692582404 + -5.5 x = 2.692582404 + -5.5 Combine like terms: 2.692582404 + -5.5 = -2.807417596 x = -2.807417596 Simplifying x = -2.807417596

Subproblem 2

x + 5.5 = -2.692582404 Simplifying x + 5.5 = -2.692582404 Reorder the terms: 5.5 + x = -2.692582404 Solving 5.5 + x = -2.692582404 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5.5' to each side of the equation. 5.5 + -5.5 + x = -2.692582404 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + x = -2.692582404 + -5.5 x = -2.692582404 + -5.5 Combine like terms: -2.692582404 + -5.5 = -8.192582404 x = -8.192582404 Simplifying x = -8.192582404

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-2.807417596, -8.192582404}

Solution

x = {-2.807417596, -8.192582404}

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