x^2+10x=-11

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


Simplifying
x2 + 10x = -11

Reorder the terms:
10x + x2 = -11

Solving
10x + x2 = -11

Solving for variable 'x'.

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

Combine like terms: -11 + 11 = 0
11 + 10x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-11' to each side of the equation.
11 + 10x + -11 + x2 = 0 + -11

Reorder the terms:
11 + -11 + 10x + x2 = 0 + -11

Combine like terms: 11 + -11 = 0
0 + 10x + x2 = 0 + -11
10x + x2 = 0 + -11

Combine like terms: 0 + -11 = -11
10x + x2 = -11

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 = -11 + 25

Reorder the terms:
25 + 10x + x2 = -11 + 25

Combine like terms: -11 + 25 = 14
25 + 10x + x2 = 14

Factor a perfect square on the left side:
(x + 5)(x + 5) = 14

Calculate the square root of the right side: 3.741657387

Break this problem into two subproblems by setting 
(x + 5) equal to 3.741657387 and -3.741657387.

Subproblem 1

x + 5 = 3.741657387 Simplifying x + 5 = 3.741657387 Reorder the terms: 5 + x = 3.741657387 Solving 5 + x = 3.741657387 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 = 3.741657387 + -5 Combine like terms: 5 + -5 = 0 0 + x = 3.741657387 + -5 x = 3.741657387 + -5 Combine like terms: 3.741657387 + -5 = -1.258342613 x = -1.258342613 Simplifying x = -1.258342613

Subproblem 2

x + 5 = -3.741657387 Simplifying x + 5 = -3.741657387 Reorder the terms: 5 + x = -3.741657387 Solving 5 + x = -3.741657387 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 = -3.741657387 + -5 Combine like terms: 5 + -5 = 0 0 + x = -3.741657387 + -5 x = -3.741657387 + -5 Combine like terms: -3.741657387 + -5 = -8.741657387 x = -8.741657387 Simplifying x = -8.741657387

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-1.258342613, -8.741657387}

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