x^2+10x-11=6

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Solution for x^2+10x-11=6 equation:


Simplifying
x2 + 10x + -11 = 6

Reorder the terms:
-11 + 10x + x2 = 6

Solving
-11 + 10x + x2 = 6

Solving for variable 'x'.

Reorder the terms:
-11 + -6 + 10x + x2 = 6 + -6

Combine like terms: -11 + -6 = -17
-17 + 10x + x2 = 6 + -6

Combine like terms: 6 + -6 = 0
-17 + 10x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '17' to each side of the equation.
-17 + 10x + 17 + x2 = 0 + 17

Reorder the terms:
-17 + 17 + 10x + x2 = 0 + 17

Combine like terms: -17 + 17 = 0
0 + 10x + x2 = 0 + 17
10x + x2 = 0 + 17

Combine like terms: 0 + 17 = 17
10x + x2 = 17

The x term is 10x.  Take half its coefficient (5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
10x + 25 + x2 = 17 + 25

Reorder the terms:
25 + 10x + x2 = 17 + 25

Combine like terms: 17 + 25 = 42
25 + 10x + x2 = 42

Factor a perfect square on the left side:
(x + 5)(x + 5) = 42

Calculate the square root of the right side: 6.480740698

Break this problem into two subproblems by setting 
(x + 5) equal to 6.480740698 and -6.480740698.

Subproblem 1

x + 5 = 6.480740698 Simplifying x + 5 = 6.480740698 Reorder the terms: 5 + x = 6.480740698 Solving 5 + x = 6.480740698 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = 6.480740698 + -5 Combine like terms: 5 + -5 = 0 0 + x = 6.480740698 + -5 x = 6.480740698 + -5 Combine like terms: 6.480740698 + -5 = 1.480740698 x = 1.480740698 Simplifying x = 1.480740698

Subproblem 2

x + 5 = -6.480740698 Simplifying x + 5 = -6.480740698 Reorder the terms: 5 + x = -6.480740698 Solving 5 + x = -6.480740698 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = -6.480740698 + -5 Combine like terms: 5 + -5 = 0 0 + x = -6.480740698 + -5 x = -6.480740698 + -5 Combine like terms: -6.480740698 + -5 = -11.480740698 x = -11.480740698 Simplifying x = -11.480740698

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.480740698, -11.480740698}

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