-x^2+34x+321=0

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Solution for -x^2+34x+321=0 equation:


Simplifying
-1x2 + 34x + 321 = 0

Reorder the terms:
321 + 34x + -1x2 = 0

Solving
321 + 34x + -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'.
-321 + -34x + x2 = 0

Move the constant term to the right:

Add '321' to each side of the equation.
-321 + -34x + 321 + x2 = 0 + 321

Reorder the terms:
-321 + 321 + -34x + x2 = 0 + 321

Combine like terms: -321 + 321 = 0
0 + -34x + x2 = 0 + 321
-34x + x2 = 0 + 321

Combine like terms: 0 + 321 = 321
-34x + x2 = 321

The x term is -34x.  Take half its coefficient (-17).
Square it (289) and add it to both sides.

Add '289' to each side of the equation.
-34x + 289 + x2 = 321 + 289

Reorder the terms:
289 + -34x + x2 = 321 + 289

Combine like terms: 321 + 289 = 610
289 + -34x + x2 = 610

Factor a perfect square on the left side:
(x + -17)(x + -17) = 610

Calculate the square root of the right side: 24.69817807

Break this problem into two subproblems by setting 
(x + -17) equal to 24.69817807 and -24.69817807.

Subproblem 1

x + -17 = 24.69817807 Simplifying x + -17 = 24.69817807 Reorder the terms: -17 + x = 24.69817807 Solving -17 + x = 24.69817807 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '17' to each side of the equation. -17 + 17 + x = 24.69817807 + 17 Combine like terms: -17 + 17 = 0 0 + x = 24.69817807 + 17 x = 24.69817807 + 17 Combine like terms: 24.69817807 + 17 = 41.69817807 x = 41.69817807 Simplifying x = 41.69817807

Subproblem 2

x + -17 = -24.69817807 Simplifying x + -17 = -24.69817807 Reorder the terms: -17 + x = -24.69817807 Solving -17 + x = -24.69817807 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '17' to each side of the equation. -17 + 17 + x = -24.69817807 + 17 Combine like terms: -17 + 17 = 0 0 + x = -24.69817807 + 17 x = -24.69817807 + 17 Combine like terms: -24.69817807 + 17 = -7.69817807 x = -7.69817807 Simplifying x = -7.69817807

Solution

The solution to the problem is based on the solutions from the subproblems. x = {41.69817807, -7.69817807}

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