x^2+24x-40=0

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Solution for x^2+24x-40=0 equation:


Simplifying
x2 + 24x + -40 = 0

Reorder the terms:
-40 + 24x + x2 = 0

Solving
-40 + 24x + 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 + 24x + 40 + x2 = 0 + 40

Reorder the terms:
-40 + 40 + 24x + x2 = 0 + 40

Combine like terms: -40 + 40 = 0
0 + 24x + x2 = 0 + 40
24x + x2 = 0 + 40

Combine like terms: 0 + 40 = 40
24x + x2 = 40

The x term is 24x.  Take half its coefficient (12).
Square it (144) and add it to both sides.

Add '144' to each side of the equation.
24x + 144 + x2 = 40 + 144

Reorder the terms:
144 + 24x + x2 = 40 + 144

Combine like terms: 40 + 144 = 184
144 + 24x + x2 = 184

Factor a perfect square on the left side:
(x + 12)(x + 12) = 184

Calculate the square root of the right side: 13.564659966

Break this problem into two subproblems by setting 
(x + 12) equal to 13.564659966 and -13.564659966.

Subproblem 1

x + 12 = 13.564659966 Simplifying x + 12 = 13.564659966 Reorder the terms: 12 + x = 13.564659966 Solving 12 + x = 13.564659966 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + x = 13.564659966 + -12 Combine like terms: 12 + -12 = 0 0 + x = 13.564659966 + -12 x = 13.564659966 + -12 Combine like terms: 13.564659966 + -12 = 1.564659966 x = 1.564659966 Simplifying x = 1.564659966

Subproblem 2

x + 12 = -13.564659966 Simplifying x + 12 = -13.564659966 Reorder the terms: 12 + x = -13.564659966 Solving 12 + x = -13.564659966 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + x = -13.564659966 + -12 Combine like terms: 12 + -12 = 0 0 + x = -13.564659966 + -12 x = -13.564659966 + -12 Combine like terms: -13.564659966 + -12 = -25.564659966 x = -25.564659966 Simplifying x = -25.564659966

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.564659966, -25.564659966}

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