6x^2+18x-20=0

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Solution for 6x^2+18x-20=0 equation:


Simplifying
6x2 + 18x + -20 = 0

Reorder the terms:
-20 + 18x + 6x2 = 0

Solving
-20 + 18x + 6x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-10 + 9x + 3x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-10 + 9x + 3x2)' equal to zero and attempt to solve: Simplifying -10 + 9x + 3x2 = 0 Solving -10 + 9x + 3x2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. -3.333333333 + 3x + x2 = 0 Move the constant term to the right: Add '3.333333333' to each side of the equation. -3.333333333 + 3x + 3.333333333 + x2 = 0 + 3.333333333 Reorder the terms: -3.333333333 + 3.333333333 + 3x + x2 = 0 + 3.333333333 Combine like terms: -3.333333333 + 3.333333333 = 0.000000000 0.000000000 + 3x + x2 = 0 + 3.333333333 3x + x2 = 0 + 3.333333333 Combine like terms: 0 + 3.333333333 = 3.333333333 3x + x2 = 3.333333333 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 = 3.333333333 + 2.25 Reorder the terms: 2.25 + 3x + x2 = 3.333333333 + 2.25 Combine like terms: 3.333333333 + 2.25 = 5.583333333 2.25 + 3x + x2 = 5.583333333 Factor a perfect square on the left side: (x + 1.5)(x + 1.5) = 5.583333333 Calculate the square root of the right side: 2.362907813 Break this problem into two subproblems by setting (x + 1.5) equal to 2.362907813 and -2.362907813.

Subproblem 1

x + 1.5 = 2.362907813 Simplifying x + 1.5 = 2.362907813 Reorder the terms: 1.5 + x = 2.362907813 Solving 1.5 + x = 2.362907813 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 = 2.362907813 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 2.362907813 + -1.5 x = 2.362907813 + -1.5 Combine like terms: 2.362907813 + -1.5 = 0.862907813 x = 0.862907813 Simplifying x = 0.862907813

Subproblem 2

x + 1.5 = -2.362907813 Simplifying x + 1.5 = -2.362907813 Reorder the terms: 1.5 + x = -2.362907813 Solving 1.5 + x = -2.362907813 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 = -2.362907813 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -2.362907813 + -1.5 x = -2.362907813 + -1.5 Combine like terms: -2.362907813 + -1.5 = -3.862907813 x = -3.862907813 Simplifying x = -3.862907813

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.862907813, -3.862907813}

Solution

x = {0.862907813, -3.862907813}

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