-x^2-33.7x-282.1=0

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Solution for -x^2-33.7x-282.1=0 equation:


Simplifying
-1x2 + -33.7x + -282.1 = 0

Reorder the terms:
-282.1 + -33.7x + -1x2 = 0

Solving
-282.1 + -33.7x + -1x2 = 0

Solving for variable 'x'.

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

Divide each side by '-1'.
282.1 + 33.7x + x2 = 0

Move the constant term to the right:

Add '-282.1' to each side of the equation.
282.1 + 33.7x + -282.1 + x2 = 0 + -282.1

Reorder the terms:
282.1 + -282.1 + 33.7x + x2 = 0 + -282.1

Combine like terms: 282.1 + -282.1 = 0.0
0.0 + 33.7x + x2 = 0 + -282.1
33.7x + x2 = 0 + -282.1

Combine like terms: 0 + -282.1 = -282.1
33.7x + x2 = -282.1

The x term is 33.7x.  Take half its coefficient (16.85).
Square it (283.9225) and add it to both sides.

Add '283.9225' to each side of the equation.
33.7x + 283.9225 + x2 = -282.1 + 283.9225

Reorder the terms:
283.9225 + 33.7x + x2 = -282.1 + 283.9225

Combine like terms: -282.1 + 283.9225 = 1.8225
283.9225 + 33.7x + x2 = 1.8225

Factor a perfect square on the left side:
(x + 16.85)(x + 16.85) = 1.8225

Calculate the square root of the right side: 1.35

Break this problem into two subproblems by setting 
(x + 16.85) equal to 1.35 and -1.35.

Subproblem 1

x + 16.85 = 1.35 Simplifying x + 16.85 = 1.35 Reorder the terms: 16.85 + x = 1.35 Solving 16.85 + x = 1.35 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-16.85' to each side of the equation. 16.85 + -16.85 + x = 1.35 + -16.85 Combine like terms: 16.85 + -16.85 = 0.00 0.00 + x = 1.35 + -16.85 x = 1.35 + -16.85 Combine like terms: 1.35 + -16.85 = -15.5 x = -15.5 Simplifying x = -15.5

Subproblem 2

x + 16.85 = -1.35 Simplifying x + 16.85 = -1.35 Reorder the terms: 16.85 + x = -1.35 Solving 16.85 + x = -1.35 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-16.85' to each side of the equation. 16.85 + -16.85 + x = -1.35 + -16.85 Combine like terms: 16.85 + -16.85 = 0.00 0.00 + x = -1.35 + -16.85 x = -1.35 + -16.85 Combine like terms: -1.35 + -16.85 = -18.2 x = -18.2 Simplifying x = -18.2

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-15.5, -18.2}

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