4x^2-11x-63=0

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Solution for 4x^2-11x-63=0 equation:


Simplifying
4x2 + -11x + -63 = 0

Reorder the terms:
-63 + -11x + 4x2 = 0

Solving
-63 + -11x + 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'.
-15.75 + -2.75x + x2 = 0

Move the constant term to the right:

Add '15.75' to each side of the equation.
-15.75 + -2.75x + 15.75 + x2 = 0 + 15.75

Reorder the terms:
-15.75 + 15.75 + -2.75x + x2 = 0 + 15.75

Combine like terms: -15.75 + 15.75 = 0.00
0.00 + -2.75x + x2 = 0 + 15.75
-2.75x + x2 = 0 + 15.75

Combine like terms: 0 + 15.75 = 15.75
-2.75x + x2 = 15.75

The x term is -2.75x.  Take half its coefficient (-1.375).
Square it (1.890625) and add it to both sides.

Add '1.890625' to each side of the equation.
-2.75x + 1.890625 + x2 = 15.75 + 1.890625

Reorder the terms:
1.890625 + -2.75x + x2 = 15.75 + 1.890625

Combine like terms: 15.75 + 1.890625 = 17.640625
1.890625 + -2.75x + x2 = 17.640625

Factor a perfect square on the left side:
(x + -1.375)(x + -1.375) = 17.640625

Calculate the square root of the right side: 4.200074404

Break this problem into two subproblems by setting 
(x + -1.375) equal to 4.200074404 and -4.200074404.

Subproblem 1

x + -1.375 = 4.200074404 Simplifying x + -1.375 = 4.200074404 Reorder the terms: -1.375 + x = 4.200074404 Solving -1.375 + x = 4.200074404 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.375' to each side of the equation. -1.375 + 1.375 + x = 4.200074404 + 1.375 Combine like terms: -1.375 + 1.375 = 0.000 0.000 + x = 4.200074404 + 1.375 x = 4.200074404 + 1.375 Combine like terms: 4.200074404 + 1.375 = 5.575074404 x = 5.575074404 Simplifying x = 5.575074404

Subproblem 2

x + -1.375 = -4.200074404 Simplifying x + -1.375 = -4.200074404 Reorder the terms: -1.375 + x = -4.200074404 Solving -1.375 + x = -4.200074404 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.375' to each side of the equation. -1.375 + 1.375 + x = -4.200074404 + 1.375 Combine like terms: -1.375 + 1.375 = 0.000 0.000 + x = -4.200074404 + 1.375 x = -4.200074404 + 1.375 Combine like terms: -4.200074404 + 1.375 = -2.825074404 x = -2.825074404 Simplifying x = -2.825074404

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.575074404, -2.825074404}

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