6.28x^2+540.08x-4173=0

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Solution for 6.28x^2+540.08x-4173=0 equation:


Simplifying
6.28x2 + 540.08x + -4173 = 0

Reorder the terms:
-4173 + 540.08x + 6.28x2 = 0

Solving
-4173 + 540.08x + 6.28x2 = 0

Solving for variable 'x'.

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

Divide each side by '6.28'.
-664.4904459 + 86x + x2 = 0

Move the constant term to the right:

Add '664.4904459' to each side of the equation.
-664.4904459 + 86x + 664.4904459 + x2 = 0 + 664.4904459

Reorder the terms:
-664.4904459 + 664.4904459 + 86x + x2 = 0 + 664.4904459

Combine like terms: -664.4904459 + 664.4904459 = 0.0000000
0.0000000 + 86x + x2 = 0 + 664.4904459
86x + x2 = 0 + 664.4904459

Combine like terms: 0 + 664.4904459 = 664.4904459
86x + x2 = 664.4904459

The x term is 86x.  Take half its coefficient (43).
Square it (1849) and add it to both sides.

Add '1849' to each side of the equation.
86x + 1849 + x2 = 664.4904459 + 1849

Reorder the terms:
1849 + 86x + x2 = 664.4904459 + 1849

Combine like terms: 664.4904459 + 1849 = 2513.4904459
1849 + 86x + x2 = 2513.4904459

Factor a perfect square on the left side:
(x + 43)(x + 43) = 2513.4904459

Calculate the square root of the right side: 50.134722956

Break this problem into two subproblems by setting 
(x + 43) equal to 50.134722956 and -50.134722956.

Subproblem 1

x + 43 = 50.134722956 Simplifying x + 43 = 50.134722956 Reorder the terms: 43 + x = 50.134722956 Solving 43 + x = 50.134722956 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-43' to each side of the equation. 43 + -43 + x = 50.134722956 + -43 Combine like terms: 43 + -43 = 0 0 + x = 50.134722956 + -43 x = 50.134722956 + -43 Combine like terms: 50.134722956 + -43 = 7.134722956 x = 7.134722956 Simplifying x = 7.134722956

Subproblem 2

x + 43 = -50.134722956 Simplifying x + 43 = -50.134722956 Reorder the terms: 43 + x = -50.134722956 Solving 43 + x = -50.134722956 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-43' to each side of the equation. 43 + -43 + x = -50.134722956 + -43 Combine like terms: 43 + -43 = 0 0 + x = -50.134722956 + -43 x = -50.134722956 + -43 Combine like terms: -50.134722956 + -43 = -93.134722956 x = -93.134722956 Simplifying x = -93.134722956

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.134722956, -93.134722956}

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