x^2+4x+7=180

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Solution for x^2+4x+7=180 equation:


Simplifying
x2 + 4x + 7 = 180

Reorder the terms:
7 + 4x + x2 = 180

Solving
7 + 4x + x2 = 180

Solving for variable 'x'.

Reorder the terms:
7 + -180 + 4x + x2 = 180 + -180

Combine like terms: 7 + -180 = -173
-173 + 4x + x2 = 180 + -180

Combine like terms: 180 + -180 = 0
-173 + 4x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '173' to each side of the equation.
-173 + 4x + 173 + x2 = 0 + 173

Reorder the terms:
-173 + 173 + 4x + x2 = 0 + 173

Combine like terms: -173 + 173 = 0
0 + 4x + x2 = 0 + 173
4x + x2 = 0 + 173

Combine like terms: 0 + 173 = 173
4x + x2 = 173

The x term is 4x.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4x + 4 + x2 = 173 + 4

Reorder the terms:
4 + 4x + x2 = 173 + 4

Combine like terms: 173 + 4 = 177
4 + 4x + x2 = 177

Factor a perfect square on the left side:
(x + 2)(x + 2) = 177

Calculate the square root of the right side: 13.304134696

Break this problem into two subproblems by setting 
(x + 2) equal to 13.304134696 and -13.304134696.

Subproblem 1

x + 2 = 13.304134696 Simplifying x + 2 = 13.304134696 Reorder the terms: 2 + x = 13.304134696 Solving 2 + x = 13.304134696 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 13.304134696 + -2 Combine like terms: 2 + -2 = 0 0 + x = 13.304134696 + -2 x = 13.304134696 + -2 Combine like terms: 13.304134696 + -2 = 11.304134696 x = 11.304134696 Simplifying x = 11.304134696

Subproblem 2

x + 2 = -13.304134696 Simplifying x + 2 = -13.304134696 Reorder the terms: 2 + x = -13.304134696 Solving 2 + x = -13.304134696 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = -13.304134696 + -2 Combine like terms: 2 + -2 = 0 0 + x = -13.304134696 + -2 x = -13.304134696 + -2 Combine like terms: -13.304134696 + -2 = -15.304134696 x = -15.304134696 Simplifying x = -15.304134696

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.304134696, -15.304134696}

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