4x^2+x-63=0

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


Simplifying
4x2 + x + -63 = 0

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

Solving
-63 + x + 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 + 0.25x + x2 = 0

Move the constant term to the right:

Add '15.75' to each side of the equation.
-15.75 + 0.25x + 15.75 + x2 = 0 + 15.75

Reorder the terms:
-15.75 + 15.75 + 0.25x + x2 = 0 + 15.75

Combine like terms: -15.75 + 15.75 = 0.00
0.00 + 0.25x + x2 = 0 + 15.75
0.25x + x2 = 0 + 15.75

Combine like terms: 0 + 15.75 = 15.75
0.25x + x2 = 15.75

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
0.25x + 0.25 + x2 = 15.75 + 0.25

Reorder the terms:
0.25 + 0.25x + x2 = 15.75 + 0.25

Combine like terms: 15.75 + 0.25 = 16
0.25 + 0.25x + x2 = 16

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 16

Calculate the square root of the right side: 4

Break this problem into two subproblems by setting 
(x + 0.5) equal to 4 and -4.

Subproblem 1

x + 0.5 = 4 Simplifying x + 0.5 = 4 Reorder the terms: 0.5 + x = 4 Solving 0.5 + x = 4 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 4 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 4 + -0.5 x = 4 + -0.5 Combine like terms: 4 + -0.5 = 3.5 x = 3.5 Simplifying x = 3.5

Subproblem 2

x + 0.5 = -4 Simplifying x + 0.5 = -4 Reorder the terms: 0.5 + x = -4 Solving 0.5 + x = -4 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -4 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -4 + -0.5 x = -4 + -0.5 Combine like terms: -4 + -0.5 = -4.5 x = -4.5 Simplifying x = -4.5

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.5, -4.5}

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