x^2+5x+5x+x=64

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Solution for x^2+5x+5x+x=64 equation:


Simplifying
x2 + 5x + 5x + x = 64

Reorder the terms:
5x + 5x + x + x2 = 64

Combine like terms: 5x + 5x = 10x
10x + x + x2 = 64

Combine like terms: 10x + x = 11x
11x + x2 = 64

Solving
11x + x2 = 64

Solving for variable 'x'.

Reorder the terms:
-64 + 11x + x2 = 64 + -64

Combine like terms: 64 + -64 = 0
-64 + 11x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '64' to each side of the equation.
-64 + 11x + 64 + x2 = 0 + 64

Reorder the terms:
-64 + 64 + 11x + x2 = 0 + 64

Combine like terms: -64 + 64 = 0
0 + 11x + x2 = 0 + 64
11x + x2 = 0 + 64

Combine like terms: 0 + 64 = 64
11x + x2 = 64

The x term is 11x.  Take half its coefficient (5.5).
Square it (30.25) and add it to both sides.

Add '30.25' to each side of the equation.
11x + 30.25 + x2 = 64 + 30.25

Reorder the terms:
30.25 + 11x + x2 = 64 + 30.25

Combine like terms: 64 + 30.25 = 94.25
30.25 + 11x + x2 = 94.25

Factor a perfect square on the left side:
(x + 5.5)(x + 5.5) = 94.25

Calculate the square root of the right side: 9.708243919

Break this problem into two subproblems by setting 
(x + 5.5) equal to 9.708243919 and -9.708243919.

Subproblem 1

x + 5.5 = 9.708243919 Simplifying x + 5.5 = 9.708243919 Reorder the terms: 5.5 + x = 9.708243919 Solving 5.5 + x = 9.708243919 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5.5' to each side of the equation. 5.5 + -5.5 + x = 9.708243919 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + x = 9.708243919 + -5.5 x = 9.708243919 + -5.5 Combine like terms: 9.708243919 + -5.5 = 4.208243919 x = 4.208243919 Simplifying x = 4.208243919

Subproblem 2

x + 5.5 = -9.708243919 Simplifying x + 5.5 = -9.708243919 Reorder the terms: 5.5 + x = -9.708243919 Solving 5.5 + x = -9.708243919 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5.5' to each side of the equation. 5.5 + -5.5 + x = -9.708243919 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + x = -9.708243919 + -5.5 x = -9.708243919 + -5.5 Combine like terms: -9.708243919 + -5.5 = -15.208243919 x = -15.208243919 Simplifying x = -15.208243919

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.208243919, -15.208243919}

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