(28+x)x=-146

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Solution for (28+x)x=-146 equation:


Simplifying
(28 + x) * x = -146

Reorder the terms for easier multiplication:
x(28 + x) = -146
(28 * x + x * x) = -146
(28x + x2) = -146

Solving
28x + x2 = -146

Solving for variable 'x'.

Reorder the terms:
146 + 28x + x2 = -146 + 146

Combine like terms: -146 + 146 = 0
146 + 28x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-146' to each side of the equation.
146 + 28x + -146 + x2 = 0 + -146

Reorder the terms:
146 + -146 + 28x + x2 = 0 + -146

Combine like terms: 146 + -146 = 0
0 + 28x + x2 = 0 + -146
28x + x2 = 0 + -146

Combine like terms: 0 + -146 = -146
28x + x2 = -146

The x term is 28x.  Take half its coefficient (14).
Square it (196) and add it to both sides.

Add '196' to each side of the equation.
28x + 196 + x2 = -146 + 196

Reorder the terms:
196 + 28x + x2 = -146 + 196

Combine like terms: -146 + 196 = 50
196 + 28x + x2 = 50

Factor a perfect square on the left side:
(x + 14)(x + 14) = 50

Calculate the square root of the right side: 7.071067812

Break this problem into two subproblems by setting 
(x + 14) equal to 7.071067812 and -7.071067812.

Subproblem 1

x + 14 = 7.071067812 Simplifying x + 14 = 7.071067812 Reorder the terms: 14 + x = 7.071067812 Solving 14 + x = 7.071067812 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-14' to each side of the equation. 14 + -14 + x = 7.071067812 + -14 Combine like terms: 14 + -14 = 0 0 + x = 7.071067812 + -14 x = 7.071067812 + -14 Combine like terms: 7.071067812 + -14 = -6.928932188 x = -6.928932188 Simplifying x = -6.928932188

Subproblem 2

x + 14 = -7.071067812 Simplifying x + 14 = -7.071067812 Reorder the terms: 14 + x = -7.071067812 Solving 14 + x = -7.071067812 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-14' to each side of the equation. 14 + -14 + x = -7.071067812 + -14 Combine like terms: 14 + -14 = 0 0 + x = -7.071067812 + -14 x = -7.071067812 + -14 Combine like terms: -7.071067812 + -14 = -21.071067812 x = -21.071067812 Simplifying x = -21.071067812

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-6.928932188, -21.071067812}

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