x^2+22x-140=0

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Solution for x^2+22x-140=0 equation:


Simplifying
x2 + 22x + -140 = 0

Reorder the terms:
-140 + 22x + x2 = 0

Solving
-140 + 22x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '140' to each side of the equation.
-140 + 22x + 140 + x2 = 0 + 140

Reorder the terms:
-140 + 140 + 22x + x2 = 0 + 140

Combine like terms: -140 + 140 = 0
0 + 22x + x2 = 0 + 140
22x + x2 = 0 + 140

Combine like terms: 0 + 140 = 140
22x + x2 = 140

The x term is 22x.  Take half its coefficient (11).
Square it (121) and add it to both sides.

Add '121' to each side of the equation.
22x + 121 + x2 = 140 + 121

Reorder the terms:
121 + 22x + x2 = 140 + 121

Combine like terms: 140 + 121 = 261
121 + 22x + x2 = 261

Factor a perfect square on the left side:
(x + 11)(x + 11) = 261

Calculate the square root of the right side: 16.155494421

Break this problem into two subproblems by setting 
(x + 11) equal to 16.155494421 and -16.155494421.

Subproblem 1

x + 11 = 16.155494421 Simplifying x + 11 = 16.155494421 Reorder the terms: 11 + x = 16.155494421 Solving 11 + x = 16.155494421 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-11' to each side of the equation. 11 + -11 + x = 16.155494421 + -11 Combine like terms: 11 + -11 = 0 0 + x = 16.155494421 + -11 x = 16.155494421 + -11 Combine like terms: 16.155494421 + -11 = 5.155494421 x = 5.155494421 Simplifying x = 5.155494421

Subproblem 2

x + 11 = -16.155494421 Simplifying x + 11 = -16.155494421 Reorder the terms: 11 + x = -16.155494421 Solving 11 + x = -16.155494421 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-11' to each side of the equation. 11 + -11 + x = -16.155494421 + -11 Combine like terms: 11 + -11 = 0 0 + x = -16.155494421 + -11 x = -16.155494421 + -11 Combine like terms: -16.155494421 + -11 = -27.155494421 x = -27.155494421 Simplifying x = -27.155494421

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.155494421, -27.155494421}

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