2x*x+11x+26=59

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Solution for 2x*x+11x+26=59 equation:


Simplifying
2x * x + 11x + 26 = 59

Multiply x * x
2x2 + 11x + 26 = 59

Reorder the terms:
26 + 11x + 2x2 = 59

Solving
26 + 11x + 2x2 = 59

Solving for variable 'x'.

Reorder the terms:
26 + -59 + 11x + 2x2 = 59 + -59

Combine like terms: 26 + -59 = -33
-33 + 11x + 2x2 = 59 + -59

Combine like terms: 59 + -59 = 0
-33 + 11x + 2x2 = 0

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

Divide each side by '2'.
-16.5 + 5.5x + x2 = 0

Move the constant term to the right:

Add '16.5' to each side of the equation.
-16.5 + 5.5x + 16.5 + x2 = 0 + 16.5

Reorder the terms:
-16.5 + 16.5 + 5.5x + x2 = 0 + 16.5

Combine like terms: -16.5 + 16.5 = 0.0
0.0 + 5.5x + x2 = 0 + 16.5
5.5x + x2 = 0 + 16.5

Combine like terms: 0 + 16.5 = 16.5
5.5x + x2 = 16.5

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 = 16.5 + 7.5625

Reorder the terms:
7.5625 + 5.5x + x2 = 16.5 + 7.5625

Combine like terms: 16.5 + 7.5625 = 24.0625
7.5625 + 5.5x + x2 = 24.0625

Factor a perfect square on the left side:
(x + 2.75)(x + 2.75) = 24.0625

Calculate the square root of the right side: 4.905354218

Break this problem into two subproblems by setting 
(x + 2.75) equal to 4.905354218 and -4.905354218.

Subproblem 1

x + 2.75 = 4.905354218 Simplifying x + 2.75 = 4.905354218 Reorder the terms: 2.75 + x = 4.905354218 Solving 2.75 + x = 4.905354218 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 = 4.905354218 + -2.75 Combine like terms: 2.75 + -2.75 = 0.00 0.00 + x = 4.905354218 + -2.75 x = 4.905354218 + -2.75 Combine like terms: 4.905354218 + -2.75 = 2.155354218 x = 2.155354218 Simplifying x = 2.155354218

Subproblem 2

x + 2.75 = -4.905354218 Simplifying x + 2.75 = -4.905354218 Reorder the terms: 2.75 + x = -4.905354218 Solving 2.75 + x = -4.905354218 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 = -4.905354218 + -2.75 Combine like terms: 2.75 + -2.75 = 0.00 0.00 + x = -4.905354218 + -2.75 x = -4.905354218 + -2.75 Combine like terms: -4.905354218 + -2.75 = -7.655354218 x = -7.655354218 Simplifying x = -7.655354218

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.155354218, -7.655354218}

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