x^2+40x+60=0

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Solution for x^2+40x+60=0 equation:


Simplifying
x2 + 40x + 60 = 0

Reorder the terms:
60 + 40x + x2 = 0

Solving
60 + 40x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-60' to each side of the equation.
60 + 40x + -60 + x2 = 0 + -60

Reorder the terms:
60 + -60 + 40x + x2 = 0 + -60

Combine like terms: 60 + -60 = 0
0 + 40x + x2 = 0 + -60
40x + x2 = 0 + -60

Combine like terms: 0 + -60 = -60
40x + x2 = -60

The x term is 40x.  Take half its coefficient (20).
Square it (400) and add it to both sides.

Add '400' to each side of the equation.
40x + 400 + x2 = -60 + 400

Reorder the terms:
400 + 40x + x2 = -60 + 400

Combine like terms: -60 + 400 = 340
400 + 40x + x2 = 340

Factor a perfect square on the left side:
(x + 20)(x + 20) = 340

Calculate the square root of the right side: 18.439088915

Break this problem into two subproblems by setting 
(x + 20) equal to 18.439088915 and -18.439088915.

Subproblem 1

x + 20 = 18.439088915 Simplifying x + 20 = 18.439088915 Reorder the terms: 20 + x = 18.439088915 Solving 20 + x = 18.439088915 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + x = 18.439088915 + -20 Combine like terms: 20 + -20 = 0 0 + x = 18.439088915 + -20 x = 18.439088915 + -20 Combine like terms: 18.439088915 + -20 = -1.560911085 x = -1.560911085 Simplifying x = -1.560911085

Subproblem 2

x + 20 = -18.439088915 Simplifying x + 20 = -18.439088915 Reorder the terms: 20 + x = -18.439088915 Solving 20 + x = -18.439088915 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + x = -18.439088915 + -20 Combine like terms: 20 + -20 = 0 0 + x = -18.439088915 + -20 x = -18.439088915 + -20 Combine like terms: -18.439088915 + -20 = -38.439088915 x = -38.439088915 Simplifying x = -38.439088915

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-1.560911085, -38.439088915}

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