209.74x^2+29216.8x-302704=0

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Solution for 209.74x^2+29216.8x-302704=0 equation:


Simplifying
209.74x2 + 29216.8x + -302704 = 0

Reorder the terms:
-302704 + 29216.8x + 209.74x2 = 0

Solving
-302704 + 29216.8x + 209.74x2 = 0

Solving for variable 'x'.

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

Divide each side by '209.74'.
-1443.234481 + 139.3000858x + x2 = 0

Move the constant term to the right:

Add '1443.234481' to each side of the equation.
-1443.234481 + 139.3000858x + 1443.234481 + x2 = 0 + 1443.234481

Reorder the terms:
-1443.234481 + 1443.234481 + 139.3000858x + x2 = 0 + 1443.234481

Combine like terms: -1443.234481 + 1443.234481 = 0.000000
0.000000 + 139.3000858x + x2 = 0 + 1443.234481
139.3000858x + x2 = 0 + 1443.234481

Combine like terms: 0 + 1443.234481 = 1443.234481
139.3000858x + x2 = 1443.234481

The x term is 139.3000858x.  Take half its coefficient (69.6500429).
Square it (4851.128476) and add it to both sides.

Add '4851.128476' to each side of the equation.
139.3000858x + 4851.128476 + x2 = 1443.234481 + 4851.128476

Reorder the terms:
4851.128476 + 139.3000858x + x2 = 1443.234481 + 4851.128476

Combine like terms: 1443.234481 + 4851.128476 = 6294.362957
4851.128476 + 139.3000858x + x2 = 6294.362957

Factor a perfect square on the left side:
(x + 69.6500429)(x + 69.6500429) = 6294.362957

Calculate the square root of the right side: 79.337021352

Break this problem into two subproblems by setting 
(x + 69.6500429) equal to 79.337021352 and -79.337021352.

Subproblem 1

x + 69.6500429 = 79.337021352 Simplifying x + 69.6500429 = 79.337021352 Reorder the terms: 69.6500429 + x = 79.337021352 Solving 69.6500429 + x = 79.337021352 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-69.6500429' to each side of the equation. 69.6500429 + -69.6500429 + x = 79.337021352 + -69.6500429 Combine like terms: 69.6500429 + -69.6500429 = 0.0000000 0.0000000 + x = 79.337021352 + -69.6500429 x = 79.337021352 + -69.6500429 Combine like terms: 79.337021352 + -69.6500429 = 9.686978452 x = 9.686978452 Simplifying x = 9.686978452

Subproblem 2

x + 69.6500429 = -79.337021352 Simplifying x + 69.6500429 = -79.337021352 Reorder the terms: 69.6500429 + x = -79.337021352 Solving 69.6500429 + x = -79.337021352 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-69.6500429' to each side of the equation. 69.6500429 + -69.6500429 + x = -79.337021352 + -69.6500429 Combine like terms: 69.6500429 + -69.6500429 = 0.0000000 0.0000000 + x = -79.337021352 + -69.6500429 x = -79.337021352 + -69.6500429 Combine like terms: -79.337021352 + -69.6500429 = -148.987064252 x = -148.987064252 Simplifying x = -148.987064252

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.686978452, -148.987064252}

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