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 = 60.659419434 x = 60.659419434 Simplifying x = 60.659419434

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 = -0.659419434 x = -0.659419434 Simplifying x = -0.659419434

Solution

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

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