3x^2-24x-8=0

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Solution for 3x^2-24x-8=0 equation:


Simplifying
3x2 + -24x + -8 = 0

Reorder the terms:
-8 + -24x + 3x2 = 0

Solving
-8 + -24x + 3x2 = 0

Solving for variable 'x'.

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

Divide each side by '3'.
-2.666666667 + -8x + x2 = 0

Move the constant term to the right:

Add '2.666666667' to each side of the equation.
-2.666666667 + -8x + 2.666666667 + x2 = 0 + 2.666666667

Reorder the terms:
-2.666666667 + 2.666666667 + -8x + x2 = 0 + 2.666666667

Combine like terms: -2.666666667 + 2.666666667 = 0.000000000
0.000000000 + -8x + x2 = 0 + 2.666666667
-8x + x2 = 0 + 2.666666667

Combine like terms: 0 + 2.666666667 = 2.666666667
-8x + x2 = 2.666666667

The x term is -8x.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8x + 16 + x2 = 2.666666667 + 16

Reorder the terms:
16 + -8x + x2 = 2.666666667 + 16

Combine like terms: 2.666666667 + 16 = 18.666666667
16 + -8x + x2 = 18.666666667

Factor a perfect square on the left side:
(x + -4)(x + -4) = 18.666666667

Calculate the square root of the right side: 4.320493799

Break this problem into two subproblems by setting 
(x + -4) equal to 4.320493799 and -4.320493799.

Subproblem 1

x + -4 = 4.320493799 Simplifying x + -4 = 4.320493799 Reorder the terms: -4 + x = 4.320493799 Solving -4 + x = 4.320493799 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = 4.320493799 + 4 Combine like terms: -4 + 4 = 0 0 + x = 4.320493799 + 4 x = 4.320493799 + 4 Combine like terms: 4.320493799 + 4 = 8.320493799 x = 8.320493799 Simplifying x = 8.320493799

Subproblem 2

x + -4 = -4.320493799 Simplifying x + -4 = -4.320493799 Reorder the terms: -4 + x = -4.320493799 Solving -4 + x = -4.320493799 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = -4.320493799 + 4 Combine like terms: -4 + 4 = 0 0 + x = -4.320493799 + 4 x = -4.320493799 + 4 Combine like terms: -4.320493799 + 4 = -0.320493799 x = -0.320493799 Simplifying x = -0.320493799

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.320493799, -0.320493799}

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