11x^2-60x-30=0

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Solution for 11x^2-60x-30=0 equation:


Simplifying
11x2 + -60x + -30 = 0

Reorder the terms:
-30 + -60x + 11x2 = 0

Solving
-30 + -60x + 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'.
-2.727272727 + -5.454545455x + x2 = 0

Move the constant term to the right:

Add '2.727272727' to each side of the equation.
-2.727272727 + -5.454545455x + 2.727272727 + x2 = 0 + 2.727272727

Reorder the terms:
-2.727272727 + 2.727272727 + -5.454545455x + x2 = 0 + 2.727272727

Combine like terms: -2.727272727 + 2.727272727 = 0.000000000
0.000000000 + -5.454545455x + x2 = 0 + 2.727272727
-5.454545455x + x2 = 0 + 2.727272727

Combine like terms: 0 + 2.727272727 = 2.727272727
-5.454545455x + x2 = 2.727272727

The x term is -5.454545455x.  Take half its coefficient (-2.727272728).
Square it (7.438016533) and add it to both sides.

Add '7.438016533' to each side of the equation.
-5.454545455x + 7.438016533 + x2 = 2.727272727 + 7.438016533

Reorder the terms:
7.438016533 + -5.454545455x + x2 = 2.727272727 + 7.438016533

Combine like terms: 2.727272727 + 7.438016533 = 10.16528926
7.438016533 + -5.454545455x + x2 = 10.16528926

Factor a perfect square on the left side:
(x + -2.727272728)(x + -2.727272728) = 10.16528926

Calculate the square root of the right side: 3.188305076

Break this problem into two subproblems by setting 
(x + -2.727272728) equal to 3.188305076 and -3.188305076.

Subproblem 1

x + -2.727272728 = 3.188305076 Simplifying x + -2.727272728 = 3.188305076 Reorder the terms: -2.727272728 + x = 3.188305076 Solving -2.727272728 + x = 3.188305076 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.727272728' to each side of the equation. -2.727272728 + 2.727272728 + x = 3.188305076 + 2.727272728 Combine like terms: -2.727272728 + 2.727272728 = 0.000000000 0.000000000 + x = 3.188305076 + 2.727272728 x = 3.188305076 + 2.727272728 Combine like terms: 3.188305076 + 2.727272728 = 5.915577804 x = 5.915577804 Simplifying x = 5.915577804

Subproblem 2

x + -2.727272728 = -3.188305076 Simplifying x + -2.727272728 = -3.188305076 Reorder the terms: -2.727272728 + x = -3.188305076 Solving -2.727272728 + x = -3.188305076 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.727272728' to each side of the equation. -2.727272728 + 2.727272728 + x = -3.188305076 + 2.727272728 Combine like terms: -2.727272728 + 2.727272728 = 0.000000000 0.000000000 + x = -3.188305076 + 2.727272728 x = -3.188305076 + 2.727272728 Combine like terms: -3.188305076 + 2.727272728 = -0.461032348 x = -0.461032348 Simplifying x = -0.461032348

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.915577804, -0.461032348}

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