6x^2+11x=5

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Solution for 6x^2+11x=5 equation:


Simplifying
6x2 + 11x = 5

Reorder the terms:
11x + 6x2 = 5

Solving
11x + 6x2 = 5

Solving for variable 'x'.

Reorder the terms:
-5 + 11x + 6x2 = 5 + -5

Combine like terms: 5 + -5 = 0
-5 + 11x + 6x2 = 0

Begin completing the square.  Divide all terms by
6 the coefficient of the squared term: 

Divide each side by '6'.
-0.8333333333 + 1.833333333x + x2 = 0

Move the constant term to the right:

Add '0.8333333333' to each side of the equation.
-0.8333333333 + 1.833333333x + 0.8333333333 + x2 = 0 + 0.8333333333

Reorder the terms:
-0.8333333333 + 0.8333333333 + 1.833333333x + x2 = 0 + 0.8333333333

Combine like terms: -0.8333333333 + 0.8333333333 = 0.0000000000
0.0000000000 + 1.833333333x + x2 = 0 + 0.8333333333
1.833333333x + x2 = 0 + 0.8333333333

Combine like terms: 0 + 0.8333333333 = 0.8333333333
1.833333333x + x2 = 0.8333333333

The x term is 1.833333333x.  Take half its coefficient (0.9166666665).
Square it (0.8402777775) and add it to both sides.

Add '0.8402777775' to each side of the equation.
1.833333333x + 0.8402777775 + x2 = 0.8333333333 + 0.8402777775

Reorder the terms:
0.8402777775 + 1.833333333x + x2 = 0.8333333333 + 0.8402777775

Combine like terms: 0.8333333333 + 0.8402777775 = 1.6736111108
0.8402777775 + 1.833333333x + x2 = 1.6736111108

Factor a perfect square on the left side:
(x + 0.9166666665)(x + 0.9166666665) = 1.6736111108

Calculate the square root of the right side: 1.293681225

Break this problem into two subproblems by setting 
(x + 0.9166666665) equal to 1.293681225 and -1.293681225.

Subproblem 1

x + 0.9166666665 = 1.293681225 Simplifying x + 0.9166666665 = 1.293681225 Reorder the terms: 0.9166666665 + x = 1.293681225 Solving 0.9166666665 + x = 1.293681225 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.9166666665' to each side of the equation. 0.9166666665 + -0.9166666665 + x = 1.293681225 + -0.9166666665 Combine like terms: 0.9166666665 + -0.9166666665 = 0.0000000000 0.0000000000 + x = 1.293681225 + -0.9166666665 x = 1.293681225 + -0.9166666665 Combine like terms: 1.293681225 + -0.9166666665 = 0.3770145585 x = 0.3770145585 Simplifying x = 0.3770145585

Subproblem 2

x + 0.9166666665 = -1.293681225 Simplifying x + 0.9166666665 = -1.293681225 Reorder the terms: 0.9166666665 + x = -1.293681225 Solving 0.9166666665 + x = -1.293681225 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.9166666665' to each side of the equation. 0.9166666665 + -0.9166666665 + x = -1.293681225 + -0.9166666665 Combine like terms: 0.9166666665 + -0.9166666665 = 0.0000000000 0.0000000000 + x = -1.293681225 + -0.9166666665 x = -1.293681225 + -0.9166666665 Combine like terms: -1.293681225 + -0.9166666665 = -2.2103478915 x = -2.2103478915 Simplifying x = -2.2103478915

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.3770145585, -2.2103478915}

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