-11x^2+35x+260=0

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Solution for -11x^2+35x+260=0 equation:


Simplifying
-11x2 + 35x + 260 = 0

Reorder the terms:
260 + 35x + -11x2 = 0

Solving
260 + 35x + -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'.
-23.63636364 + -3.181818182x + x2 = 0

Move the constant term to the right:

Add '23.63636364' to each side of the equation.
-23.63636364 + -3.181818182x + 23.63636364 + x2 = 0 + 23.63636364

Reorder the terms:
-23.63636364 + 23.63636364 + -3.181818182x + x2 = 0 + 23.63636364

Combine like terms: -23.63636364 + 23.63636364 = 0.00000000
0.00000000 + -3.181818182x + x2 = 0 + 23.63636364
-3.181818182x + x2 = 0 + 23.63636364

Combine like terms: 0 + 23.63636364 = 23.63636364
-3.181818182x + x2 = 23.63636364

The x term is -3.181818182x.  Take half its coefficient (-1.590909091).
Square it (2.530991736) and add it to both sides.

Add '2.530991736' to each side of the equation.
-3.181818182x + 2.530991736 + x2 = 23.63636364 + 2.530991736

Reorder the terms:
2.530991736 + -3.181818182x + x2 = 23.63636364 + 2.530991736

Combine like terms: 23.63636364 + 2.530991736 = 26.167355376
2.530991736 + -3.181818182x + x2 = 26.167355376

Factor a perfect square on the left side:
(x + -1.590909091)(x + -1.590909091) = 26.167355376

Calculate the square root of the right side: 5.115403735

Break this problem into two subproblems by setting 
(x + -1.590909091) equal to 5.115403735 and -5.115403735.

Subproblem 1

x + -1.590909091 = 5.115403735 Simplifying x + -1.590909091 = 5.115403735 Reorder the terms: -1.590909091 + x = 5.115403735 Solving -1.590909091 + x = 5.115403735 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.590909091' to each side of the equation. -1.590909091 + 1.590909091 + x = 5.115403735 + 1.590909091 Combine like terms: -1.590909091 + 1.590909091 = 0.000000000 0.000000000 + x = 5.115403735 + 1.590909091 x = 5.115403735 + 1.590909091 Combine like terms: 5.115403735 + 1.590909091 = 6.706312826 x = 6.706312826 Simplifying x = 6.706312826

Subproblem 2

x + -1.590909091 = -5.115403735 Simplifying x + -1.590909091 = -5.115403735 Reorder the terms: -1.590909091 + x = -5.115403735 Solving -1.590909091 + x = -5.115403735 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.590909091' to each side of the equation. -1.590909091 + 1.590909091 + x = -5.115403735 + 1.590909091 Combine like terms: -1.590909091 + 1.590909091 = 0.000000000 0.000000000 + x = -5.115403735 + 1.590909091 x = -5.115403735 + 1.590909091 Combine like terms: -5.115403735 + 1.590909091 = -3.524494644 x = -3.524494644 Simplifying x = -3.524494644

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.706312826, -3.524494644}

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