x^2+60x-40=0

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


Simplifying
x2 + 60x + -40 = 0

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

Solving
-40 + 60x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

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

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

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

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

The x term is 60x.  Take half its coefficient (30).
Square it (900) and add it to both sides.

Add '900' to each side of the equation.
60x + 900 + x2 = 40 + 900

Reorder the terms:
900 + 60x + x2 = 40 + 900

Combine like terms: 40 + 900 = 940
900 + 60x + x2 = 940

Factor a perfect square on the left side:
(x + 30)(x + 30) = 940

Calculate the square root of the right side: 30.659419434

Break this problem into two subproblems by setting 
(x + 30) equal to 30.659419434 and -30.659419434.

Subproblem 1

x + 30 = 30.659419434 Simplifying x + 30 = 30.659419434 Reorder the terms: 30 + x = 30.659419434 Solving 30 + x = 30.659419434 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-30' to each side of the equation. 30 + -30 + x = 30.659419434 + -30 Combine like terms: 30 + -30 = 0 0 + x = 30.659419434 + -30 x = 30.659419434 + -30 Combine like terms: 30.659419434 + -30 = 0.659419434 x = 0.659419434 Simplifying x = 0.659419434

Subproblem 2

x + 30 = -30.659419434 Simplifying x + 30 = -30.659419434 Reorder the terms: 30 + x = -30.659419434 Solving 30 + x = -30.659419434 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-30' to each side of the equation. 30 + -30 + x = -30.659419434 + -30 Combine like terms: 30 + -30 = 0 0 + x = -30.659419434 + -30 x = -30.659419434 + -30 Combine like terms: -30.659419434 + -30 = -60.659419434 x = -60.659419434 Simplifying x = -60.659419434

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.659419434, -60.659419434}

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