2x^2+7x-384=0

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Solution for 2x^2+7x-384=0 equation:


Simplifying
2x2 + 7x + -384 = 0

Reorder the terms:
-384 + 7x + 2x2 = 0

Solving
-384 + 7x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
-192 + 3.5x + x2 = 0

Move the constant term to the right:

Add '192' to each side of the equation.
-192 + 3.5x + 192 + x2 = 0 + 192

Reorder the terms:
-192 + 192 + 3.5x + x2 = 0 + 192

Combine like terms: -192 + 192 = 0
0 + 3.5x + x2 = 0 + 192
3.5x + x2 = 0 + 192

Combine like terms: 0 + 192 = 192
3.5x + x2 = 192

The x term is 3.5x.  Take half its coefficient (1.75).
Square it (3.0625) and add it to both sides.

Add '3.0625' to each side of the equation.
3.5x + 3.0625 + x2 = 192 + 3.0625

Reorder the terms:
3.0625 + 3.5x + x2 = 192 + 3.0625

Combine like terms: 192 + 3.0625 = 195.0625
3.0625 + 3.5x + x2 = 195.0625

Factor a perfect square on the left side:
(x + 1.75)(x + 1.75) = 195.0625

Calculate the square root of the right side: 13.966477723

Break this problem into two subproblems by setting 
(x + 1.75) equal to 13.966477723 and -13.966477723.

Subproblem 1

x + 1.75 = 13.966477723 Simplifying x + 1.75 = 13.966477723 Reorder the terms: 1.75 + x = 13.966477723 Solving 1.75 + x = 13.966477723 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.75' to each side of the equation. 1.75 + -1.75 + x = 13.966477723 + -1.75 Combine like terms: 1.75 + -1.75 = 0.00 0.00 + x = 13.966477723 + -1.75 x = 13.966477723 + -1.75 Combine like terms: 13.966477723 + -1.75 = 12.216477723 x = 12.216477723 Simplifying x = 12.216477723

Subproblem 2

x + 1.75 = -13.966477723 Simplifying x + 1.75 = -13.966477723 Reorder the terms: 1.75 + x = -13.966477723 Solving 1.75 + x = -13.966477723 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.75' to each side of the equation. 1.75 + -1.75 + x = -13.966477723 + -1.75 Combine like terms: 1.75 + -1.75 = 0.00 0.00 + x = -13.966477723 + -1.75 x = -13.966477723 + -1.75 Combine like terms: -13.966477723 + -1.75 = -15.716477723 x = -15.716477723 Simplifying x = -15.716477723

Solution

The solution to the problem is based on the solutions from the subproblems. x = {12.216477723, -15.716477723}

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