x^2+7x-360=0

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Solution for x^2+7x-360=0 equation:


Simplifying
x2 + 7x + -360 = 0

Reorder the terms:
-360 + 7x + x2 = 0

Solving
-360 + 7x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '360' to each side of the equation.
-360 + 7x + 360 + x2 = 0 + 360

Reorder the terms:
-360 + 360 + 7x + x2 = 0 + 360

Combine like terms: -360 + 360 = 0
0 + 7x + x2 = 0 + 360
7x + x2 = 0 + 360

Combine like terms: 0 + 360 = 360
7x + x2 = 360

The x term is 7x.  Take half its coefficient (3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
7x + 12.25 + x2 = 360 + 12.25

Reorder the terms:
12.25 + 7x + x2 = 360 + 12.25

Combine like terms: 360 + 12.25 = 372.25
12.25 + 7x + x2 = 372.25

Factor a perfect square on the left side:
(x + 3.5)(x + 3.5) = 372.25

Calculate the square root of the right side: 19.293781382

Break this problem into two subproblems by setting 
(x + 3.5) equal to 19.293781382 and -19.293781382.

Subproblem 1

x + 3.5 = 19.293781382 Simplifying x + 3.5 = 19.293781382 Reorder the terms: 3.5 + x = 19.293781382 Solving 3.5 + x = 19.293781382 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + x = 19.293781382 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + x = 19.293781382 + -3.5 x = 19.293781382 + -3.5 Combine like terms: 19.293781382 + -3.5 = 15.793781382 x = 15.793781382 Simplifying x = 15.793781382

Subproblem 2

x + 3.5 = -19.293781382 Simplifying x + 3.5 = -19.293781382 Reorder the terms: 3.5 + x = -19.293781382 Solving 3.5 + x = -19.293781382 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + x = -19.293781382 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + x = -19.293781382 + -3.5 x = -19.293781382 + -3.5 Combine like terms: -19.293781382 + -3.5 = -22.793781382 x = -22.793781382 Simplifying x = -22.793781382

Solution

The solution to the problem is based on the solutions from the subproblems. x = {15.793781382, -22.793781382}

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