3x^2-14x-33=0

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Solution for 3x^2-14x-33=0 equation:


Simplifying
3x2 + -14x + -33 = 0

Reorder the terms:
-33 + -14x + 3x2 = 0

Solving
-33 + -14x + 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'.
-11 + -4.666666667x + x2 = 0

Move the constant term to the right:

Add '11' to each side of the equation.
-11 + -4.666666667x + 11 + x2 = 0 + 11

Reorder the terms:
-11 + 11 + -4.666666667x + x2 = 0 + 11

Combine like terms: -11 + 11 = 0
0 + -4.666666667x + x2 = 0 + 11
-4.666666667x + x2 = 0 + 11

Combine like terms: 0 + 11 = 11
-4.666666667x + x2 = 11

The x term is -4.666666667x.  Take half its coefficient (-2.333333334).
Square it (5.444444448) and add it to both sides.

Add '5.444444448' to each side of the equation.
-4.666666667x + 5.444444448 + x2 = 11 + 5.444444448

Reorder the terms:
5.444444448 + -4.666666667x + x2 = 11 + 5.444444448

Combine like terms: 11 + 5.444444448 = 16.444444448
5.444444448 + -4.666666667x + x2 = 16.444444448

Factor a perfect square on the left side:
(x + -2.333333334)(x + -2.333333334) = 16.444444448

Calculate the square root of the right side: 4.055175021

Break this problem into two subproblems by setting 
(x + -2.333333334) equal to 4.055175021 and -4.055175021.

Subproblem 1

x + -2.333333334 = 4.055175021 Simplifying x + -2.333333334 = 4.055175021 Reorder the terms: -2.333333334 + x = 4.055175021 Solving -2.333333334 + x = 4.055175021 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.333333334' to each side of the equation. -2.333333334 + 2.333333334 + x = 4.055175021 + 2.333333334 Combine like terms: -2.333333334 + 2.333333334 = 0.000000000 0.000000000 + x = 4.055175021 + 2.333333334 x = 4.055175021 + 2.333333334 Combine like terms: 4.055175021 + 2.333333334 = 6.388508355 x = 6.388508355 Simplifying x = 6.388508355

Subproblem 2

x + -2.333333334 = -4.055175021 Simplifying x + -2.333333334 = -4.055175021 Reorder the terms: -2.333333334 + x = -4.055175021 Solving -2.333333334 + x = -4.055175021 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.333333334' to each side of the equation. -2.333333334 + 2.333333334 + x = -4.055175021 + 2.333333334 Combine like terms: -2.333333334 + 2.333333334 = 0.000000000 0.000000000 + x = -4.055175021 + 2.333333334 x = -4.055175021 + 2.333333334 Combine like terms: -4.055175021 + 2.333333334 = -1.721841687 x = -1.721841687 Simplifying x = -1.721841687

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.388508355, -1.721841687}

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