x^2+4x+50+4x+31=180

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Solution for x^2+4x+50+4x+31=180 equation:


Simplifying
x2 + 4x + 50 + 4x + 31 = 180

Reorder the terms:
50 + 31 + 4x + 4x + x2 = 180

Combine like terms: 50 + 31 = 81
81 + 4x + 4x + x2 = 180

Combine like terms: 4x + 4x = 8x
81 + 8x + x2 = 180

Solving
81 + 8x + x2 = 180

Solving for variable 'x'.

Reorder the terms:
81 + -180 + 8x + x2 = 180 + -180

Combine like terms: 81 + -180 = -99
-99 + 8x + x2 = 180 + -180

Combine like terms: 180 + -180 = 0
-99 + 8x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '99' to each side of the equation.
-99 + 8x + 99 + x2 = 0 + 99

Reorder the terms:
-99 + 99 + 8x + x2 = 0 + 99

Combine like terms: -99 + 99 = 0
0 + 8x + x2 = 0 + 99
8x + x2 = 0 + 99

Combine like terms: 0 + 99 = 99
8x + x2 = 99

The x term is 8x.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8x + 16 + x2 = 99 + 16

Reorder the terms:
16 + 8x + x2 = 99 + 16

Combine like terms: 99 + 16 = 115
16 + 8x + x2 = 115

Factor a perfect square on the left side:
(x + 4)(x + 4) = 115

Calculate the square root of the right side: 10.723805295

Break this problem into two subproblems by setting 
(x + 4) equal to 10.723805295 and -10.723805295.

Subproblem 1

x + 4 = 10.723805295 Simplifying x + 4 = 10.723805295 Reorder the terms: 4 + x = 10.723805295 Solving 4 + x = 10.723805295 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = 10.723805295 + -4 Combine like terms: 4 + -4 = 0 0 + x = 10.723805295 + -4 x = 10.723805295 + -4 Combine like terms: 10.723805295 + -4 = 6.723805295 x = 6.723805295 Simplifying x = 6.723805295

Subproblem 2

x + 4 = -10.723805295 Simplifying x + 4 = -10.723805295 Reorder the terms: 4 + x = -10.723805295 Solving 4 + x = -10.723805295 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = -10.723805295 + -4 Combine like terms: 4 + -4 = 0 0 + x = -10.723805295 + -4 x = -10.723805295 + -4 Combine like terms: -10.723805295 + -4 = -14.723805295 x = -14.723805295 Simplifying x = -14.723805295

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.723805295, -14.723805295}

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