2x^2+11x-59=0

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Solution for 2x^2+11x-59=0 equation:


Simplifying
2x2 + 11x + -59 = 0

Reorder the terms:
-59 + 11x + 2x2 = 0

Solving
-59 + 11x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
-29.5 + 5.5x + x2 = 0

Move the constant term to the right:

Add '29.5' to each side of the equation.
-29.5 + 5.5x + 29.5 + x2 = 0 + 29.5

Reorder the terms:
-29.5 + 29.5 + 5.5x + x2 = 0 + 29.5

Combine like terms: -29.5 + 29.5 = 0.0
0.0 + 5.5x + x2 = 0 + 29.5
5.5x + x2 = 0 + 29.5

Combine like terms: 0 + 29.5 = 29.5
5.5x + x2 = 29.5

The x term is 5.5x.  Take half its coefficient (2.75).
Square it (7.5625) and add it to both sides.

Add '7.5625' to each side of the equation.
5.5x + 7.5625 + x2 = 29.5 + 7.5625

Reorder the terms:
7.5625 + 5.5x + x2 = 29.5 + 7.5625

Combine like terms: 29.5 + 7.5625 = 37.0625
7.5625 + 5.5x + x2 = 37.0625

Factor a perfect square on the left side:
(x + 2.75)(x + 2.75) = 37.0625

Calculate the square root of the right side: 6.087897831

Break this problem into two subproblems by setting 
(x + 2.75) equal to 6.087897831 and -6.087897831.

Subproblem 1

x + 2.75 = 6.087897831 Simplifying x + 2.75 = 6.087897831 Reorder the terms: 2.75 + x = 6.087897831 Solving 2.75 + x = 6.087897831 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.75' to each side of the equation. 2.75 + -2.75 + x = 6.087897831 + -2.75 Combine like terms: 2.75 + -2.75 = 0.00 0.00 + x = 6.087897831 + -2.75 x = 6.087897831 + -2.75 Combine like terms: 6.087897831 + -2.75 = 3.337897831 x = 3.337897831 Simplifying x = 3.337897831

Subproblem 2

x + 2.75 = -6.087897831 Simplifying x + 2.75 = -6.087897831 Reorder the terms: 2.75 + x = -6.087897831 Solving 2.75 + x = -6.087897831 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.75' to each side of the equation. 2.75 + -2.75 + x = -6.087897831 + -2.75 Combine like terms: 2.75 + -2.75 = 0.00 0.00 + x = -6.087897831 + -2.75 x = -6.087897831 + -2.75 Combine like terms: -6.087897831 + -2.75 = -8.837897831 x = -8.837897831 Simplifying x = -8.837897831

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.337897831, -8.837897831}

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