24x^2-x-7=0

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Solution for 24x^2-x-7=0 equation:


Simplifying
24x2 + -1x + -7 = 0

Reorder the terms:
-7 + -1x + 24x2 = 0

Solving
-7 + -1x + 24x2 = 0

Solving for variable 'x'.

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

Divide each side by '24'.
-0.2916666667 + -0.04166666667x + x2 = 0

Move the constant term to the right:

Add '0.2916666667' to each side of the equation.
-0.2916666667 + -0.04166666667x + 0.2916666667 + x2 = 0 + 0.2916666667

Reorder the terms:
-0.2916666667 + 0.2916666667 + -0.04166666667x + x2 = 0 + 0.2916666667

Combine like terms: -0.2916666667 + 0.2916666667 = 0.0000000000
0.0000000000 + -0.04166666667x + x2 = 0 + 0.2916666667
-0.04166666667x + x2 = 0 + 0.2916666667

Combine like terms: 0 + 0.2916666667 = 0.2916666667
-0.04166666667x + x2 = 0.2916666667

The x term is -0.04166666667x.  Take half its coefficient (-0.02083333334).
Square it (0.0004340277781) and add it to both sides.

Add '0.0004340277781' to each side of the equation.
-0.04166666667x + 0.0004340277781 + x2 = 0.2916666667 + 0.0004340277781

Reorder the terms:
0.0004340277781 + -0.04166666667x + x2 = 0.2916666667 + 0.0004340277781

Combine like terms: 0.2916666667 + 0.0004340277781 = 0.2921006944781
0.0004340277781 + -0.04166666667x + x2 = 0.2921006944781

Factor a perfect square on the left side:
(x + -0.02083333334)(x + -0.02083333334) = 0.2921006944781

Calculate the square root of the right side: 0.540463407

Break this problem into two subproblems by setting 
(x + -0.02083333334) equal to 0.540463407 and -0.540463407.

Subproblem 1

x + -0.02083333334 = 0.540463407 Simplifying x + -0.02083333334 = 0.540463407 Reorder the terms: -0.02083333334 + x = 0.540463407 Solving -0.02083333334 + x = 0.540463407 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.02083333334' to each side of the equation. -0.02083333334 + 0.02083333334 + x = 0.540463407 + 0.02083333334 Combine like terms: -0.02083333334 + 0.02083333334 = 0.00000000000 0.00000000000 + x = 0.540463407 + 0.02083333334 x = 0.540463407 + 0.02083333334 Combine like terms: 0.540463407 + 0.02083333334 = 0.56129674034 x = 0.56129674034 Simplifying x = 0.56129674034

Subproblem 2

x + -0.02083333334 = -0.540463407 Simplifying x + -0.02083333334 = -0.540463407 Reorder the terms: -0.02083333334 + x = -0.540463407 Solving -0.02083333334 + x = -0.540463407 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.02083333334' to each side of the equation. -0.02083333334 + 0.02083333334 + x = -0.540463407 + 0.02083333334 Combine like terms: -0.02083333334 + 0.02083333334 = 0.00000000000 0.00000000000 + x = -0.540463407 + 0.02083333334 x = -0.540463407 + 0.02083333334 Combine like terms: -0.540463407 + 0.02083333334 = -0.51963007366 x = -0.51963007366 Simplifying x = -0.51963007366

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.56129674034, -0.51963007366}

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