8x^2-33x+12=0

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Solution for 8x^2-33x+12=0 equation:


Simplifying
8x2 + -33x + 12 = 0

Reorder the terms:
12 + -33x + 8x2 = 0

Solving
12 + -33x + 8x2 = 0

Solving for variable 'x'.

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

Divide each side by '8'.
1.5 + -4.125x + x2 = 0

Move the constant term to the right:

Add '-1.5' to each side of the equation.
1.5 + -4.125x + -1.5 + x2 = 0 + -1.5

Reorder the terms:
1.5 + -1.5 + -4.125x + x2 = 0 + -1.5

Combine like terms: 1.5 + -1.5 = 0.0
0.0 + -4.125x + x2 = 0 + -1.5
-4.125x + x2 = 0 + -1.5

Combine like terms: 0 + -1.5 = -1.5
-4.125x + x2 = -1.5

The x term is -4.125x.  Take half its coefficient (-2.0625).
Square it (4.25390625) and add it to both sides.

Add '4.25390625' to each side of the equation.
-4.125x + 4.25390625 + x2 = -1.5 + 4.25390625

Reorder the terms:
4.25390625 + -4.125x + x2 = -1.5 + 4.25390625

Combine like terms: -1.5 + 4.25390625 = 2.75390625
4.25390625 + -4.125x + x2 = 2.75390625

Factor a perfect square on the left side:
(x + -2.0625)(x + -2.0625) = 2.75390625

Calculate the square root of the right side: 1.659489756

Break this problem into two subproblems by setting 
(x + -2.0625) equal to 1.659489756 and -1.659489756.

Subproblem 1

x + -2.0625 = 1.659489756 Simplifying x + -2.0625 = 1.659489756 Reorder the terms: -2.0625 + x = 1.659489756 Solving -2.0625 + x = 1.659489756 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.0625' to each side of the equation. -2.0625 + 2.0625 + x = 1.659489756 + 2.0625 Combine like terms: -2.0625 + 2.0625 = 0.0000 0.0000 + x = 1.659489756 + 2.0625 x = 1.659489756 + 2.0625 Combine like terms: 1.659489756 + 2.0625 = 3.721989756 x = 3.721989756 Simplifying x = 3.721989756

Subproblem 2

x + -2.0625 = -1.659489756 Simplifying x + -2.0625 = -1.659489756 Reorder the terms: -2.0625 + x = -1.659489756 Solving -2.0625 + x = -1.659489756 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.0625' to each side of the equation. -2.0625 + 2.0625 + x = -1.659489756 + 2.0625 Combine like terms: -2.0625 + 2.0625 = 0.0000 0.0000 + x = -1.659489756 + 2.0625 x = -1.659489756 + 2.0625 Combine like terms: -1.659489756 + 2.0625 = 0.403010244 x = 0.403010244 Simplifying x = 0.403010244

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.721989756, 0.403010244}

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