0=x^2-24x-140

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Solution for 0=x^2-24x-140 equation:


Simplifying
0 = x2 + -24x + -140

Reorder the terms:
0 = -140 + -24x + x2

Solving
0 = -140 + -24x + x2

Solving for variable 'x'.

Combine like terms: 0 + 140 = 140
140 + 24x + -1x2 = -140 + -24x + x2 + 140 + 24x + -1x2

Reorder the terms:
140 + 24x + -1x2 = -140 + 140 + -24x + 24x + x2 + -1x2

Combine like terms: -140 + 140 = 0
140 + 24x + -1x2 = 0 + -24x + 24x + x2 + -1x2
140 + 24x + -1x2 = -24x + 24x + x2 + -1x2

Combine like terms: -24x + 24x = 0
140 + 24x + -1x2 = 0 + x2 + -1x2
140 + 24x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
140 + 24x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-140 + -24x + x2 = 0

Move the constant term to the right:

Add '140' to each side of the equation.
-140 + -24x + 140 + x2 = 0 + 140

Reorder the terms:
-140 + 140 + -24x + x2 = 0 + 140

Combine like terms: -140 + 140 = 0
0 + -24x + x2 = 0 + 140
-24x + x2 = 0 + 140

Combine like terms: 0 + 140 = 140
-24x + x2 = 140

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 = 140 + 144

Reorder the terms:
144 + -24x + x2 = 140 + 144

Combine like terms: 140 + 144 = 284
144 + -24x + x2 = 284

Factor a perfect square on the left side:
(x + -12)(x + -12) = 284

Calculate the square root of the right side: 16.852299546

Break this problem into two subproblems by setting 
(x + -12) equal to 16.852299546 and -16.852299546.

Subproblem 1

x + -12 = 16.852299546 Simplifying x + -12 = 16.852299546 Reorder the terms: -12 + x = 16.852299546 Solving -12 + x = 16.852299546 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 = 16.852299546 + 12 Combine like terms: -12 + 12 = 0 0 + x = 16.852299546 + 12 x = 16.852299546 + 12 Combine like terms: 16.852299546 + 12 = 28.852299546 x = 28.852299546 Simplifying x = 28.852299546

Subproblem 2

x + -12 = -16.852299546 Simplifying x + -12 = -16.852299546 Reorder the terms: -12 + x = -16.852299546 Solving -12 + x = -16.852299546 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 = -16.852299546 + 12 Combine like terms: -12 + 12 = 0 0 + x = -16.852299546 + 12 x = -16.852299546 + 12 Combine like terms: -16.852299546 + 12 = -4.852299546 x = -4.852299546 Simplifying x = -4.852299546

Solution

The solution to the problem is based on the solutions from the subproblems. x = {28.852299546, -4.852299546}

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