11x^2-20x-52=0

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Solution for 11x^2-20x-52=0 equation:


Simplifying
11x2 + -20x + -52 = 0

Reorder the terms:
-52 + -20x + 11x2 = 0

Solving
-52 + -20x + 11x2 = 0

Solving for variable 'x'.

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

Divide each side by '11'.
-4.727272727 + -1.818181818x + x2 = 0

Move the constant term to the right:

Add '4.727272727' to each side of the equation.
-4.727272727 + -1.818181818x + 4.727272727 + x2 = 0 + 4.727272727

Reorder the terms:
-4.727272727 + 4.727272727 + -1.818181818x + x2 = 0 + 4.727272727

Combine like terms: -4.727272727 + 4.727272727 = 0.000000000
0.000000000 + -1.818181818x + x2 = 0 + 4.727272727
-1.818181818x + x2 = 0 + 4.727272727

Combine like terms: 0 + 4.727272727 = 4.727272727
-1.818181818x + x2 = 4.727272727

The x term is -1.818181818x.  Take half its coefficient (-0.909090909).
Square it (0.8264462808) and add it to both sides.

Add '0.8264462808' to each side of the equation.
-1.818181818x + 0.8264462808 + x2 = 4.727272727 + 0.8264462808

Reorder the terms:
0.8264462808 + -1.818181818x + x2 = 4.727272727 + 0.8264462808

Combine like terms: 4.727272727 + 0.8264462808 = 5.5537190078
0.8264462808 + -1.818181818x + x2 = 5.5537190078

Factor a perfect square on the left side:
(x + -0.909090909)(x + -0.909090909) = 5.5537190078

Calculate the square root of the right side: 2.356632981

Break this problem into two subproblems by setting 
(x + -0.909090909) equal to 2.356632981 and -2.356632981.

Subproblem 1

x + -0.909090909 = 2.356632981 Simplifying x + -0.909090909 = 2.356632981 Reorder the terms: -0.909090909 + x = 2.356632981 Solving -0.909090909 + x = 2.356632981 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.909090909' to each side of the equation. -0.909090909 + 0.909090909 + x = 2.356632981 + 0.909090909 Combine like terms: -0.909090909 + 0.909090909 = 0.000000000 0.000000000 + x = 2.356632981 + 0.909090909 x = 2.356632981 + 0.909090909 Combine like terms: 2.356632981 + 0.909090909 = 3.26572389 x = 3.26572389 Simplifying x = 3.26572389

Subproblem 2

x + -0.909090909 = -2.356632981 Simplifying x + -0.909090909 = -2.356632981 Reorder the terms: -0.909090909 + x = -2.356632981 Solving -0.909090909 + x = -2.356632981 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.909090909' to each side of the equation. -0.909090909 + 0.909090909 + x = -2.356632981 + 0.909090909 Combine like terms: -0.909090909 + 0.909090909 = 0.000000000 0.000000000 + x = -2.356632981 + 0.909090909 x = -2.356632981 + 0.909090909 Combine like terms: -2.356632981 + 0.909090909 = -1.447542072 x = -1.447542072 Simplifying x = -1.447542072

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.26572389, -1.447542072}

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