4x^2+378x-4248.5=0

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Solution for 4x^2+378x-4248.5=0 equation:


Simplifying
4x2 + 378x + -4248.5 = 0

Reorder the terms:
-4248.5 + 378x + 4x2 = 0

Solving
-4248.5 + 378x + 4x2 = 0

Solving for variable 'x'.

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

Divide each side by '4'.
-1062.125 + 94.5x + x2 = 0

Move the constant term to the right:

Add '1062.125' to each side of the equation.
-1062.125 + 94.5x + 1062.125 + x2 = 0 + 1062.125

Reorder the terms:
-1062.125 + 1062.125 + 94.5x + x2 = 0 + 1062.125

Combine like terms: -1062.125 + 1062.125 = 0.000
0.000 + 94.5x + x2 = 0 + 1062.125
94.5x + x2 = 0 + 1062.125

Combine like terms: 0 + 1062.125 = 1062.125
94.5x + x2 = 1062.125

The x term is 94.5x.  Take half its coefficient (47.25).
Square it (2232.5625) and add it to both sides.

Add '2232.5625' to each side of the equation.
94.5x + 2232.5625 + x2 = 1062.125 + 2232.5625

Reorder the terms:
2232.5625 + 94.5x + x2 = 1062.125 + 2232.5625

Combine like terms: 1062.125 + 2232.5625 = 3294.6875
2232.5625 + 94.5x + x2 = 3294.6875

Factor a perfect square on the left side:
(x + 47.25)(x + 47.25) = 3294.6875

Calculate the square root of the right side: 57.399368463

Break this problem into two subproblems by setting 
(x + 47.25) equal to 57.399368463 and -57.399368463.

Subproblem 1

x + 47.25 = 57.399368463 Simplifying x + 47.25 = 57.399368463 Reorder the terms: 47.25 + x = 57.399368463 Solving 47.25 + x = 57.399368463 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-47.25' to each side of the equation. 47.25 + -47.25 + x = 57.399368463 + -47.25 Combine like terms: 47.25 + -47.25 = 0.00 0.00 + x = 57.399368463 + -47.25 x = 57.399368463 + -47.25 Combine like terms: 57.399368463 + -47.25 = 10.149368463 x = 10.149368463 Simplifying x = 10.149368463

Subproblem 2

x + 47.25 = -57.399368463 Simplifying x + 47.25 = -57.399368463 Reorder the terms: 47.25 + x = -57.399368463 Solving 47.25 + x = -57.399368463 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-47.25' to each side of the equation. 47.25 + -47.25 + x = -57.399368463 + -47.25 Combine like terms: 47.25 + -47.25 = 0.00 0.00 + x = -57.399368463 + -47.25 x = -57.399368463 + -47.25 Combine like terms: -57.399368463 + -47.25 = -104.649368463 x = -104.649368463 Simplifying x = -104.649368463

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.149368463, -104.649368463}

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