9(3y-2)y=2

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Solution for 9(3y-2)y=2 equation:


Simplifying
9(3y + -2) * y = 2

Reorder the terms:
9(-2 + 3y) * y = 2

Reorder the terms for easier multiplication:
9y(-2 + 3y) = 2
(-2 * 9y + 3y * 9y) = 2
(-18y + 27y2) = 2

Solving
-18y + 27y2 = 2

Solving for variable 'y'.

Reorder the terms:
-2 + -18y + 27y2 = 2 + -2

Combine like terms: 2 + -2 = 0
-2 + -18y + 27y2 = 0

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

Divide each side by '27'.
-0.07407407407 + -0.6666666667y + y2 = 0

Move the constant term to the right:

Add '0.07407407407' to each side of the equation.
-0.07407407407 + -0.6666666667y + 0.07407407407 + y2 = 0 + 0.07407407407

Reorder the terms:
-0.07407407407 + 0.07407407407 + -0.6666666667y + y2 = 0 + 0.07407407407

Combine like terms: -0.07407407407 + 0.07407407407 = 0.00000000000
0.00000000000 + -0.6666666667y + y2 = 0 + 0.07407407407
-0.6666666667y + y2 = 0 + 0.07407407407

Combine like terms: 0 + 0.07407407407 = 0.07407407407
-0.6666666667y + y2 = 0.07407407407

The y term is -0.6666666667y.  Take half its coefficient (-0.3333333334).
Square it (0.1111111112) and add it to both sides.

Add '0.1111111112' to each side of the equation.
-0.6666666667y + 0.1111111112 + y2 = 0.07407407407 + 0.1111111112

Reorder the terms:
0.1111111112 + -0.6666666667y + y2 = 0.07407407407 + 0.1111111112

Combine like terms: 0.07407407407 + 0.1111111112 = 0.18518518527
0.1111111112 + -0.6666666667y + y2 = 0.18518518527

Factor a perfect square on the left side:
(y + -0.3333333334)(y + -0.3333333334) = 0.18518518527

Calculate the square root of the right side: 0.430331483

Break this problem into two subproblems by setting 
(y + -0.3333333334) equal to 0.430331483 and -0.430331483.

Subproblem 1

y + -0.3333333334 = 0.430331483 Simplifying y + -0.3333333334 = 0.430331483 Reorder the terms: -0.3333333334 + y = 0.430331483 Solving -0.3333333334 + y = 0.430331483 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.3333333334' to each side of the equation. -0.3333333334 + 0.3333333334 + y = 0.430331483 + 0.3333333334 Combine like terms: -0.3333333334 + 0.3333333334 = 0.0000000000 0.0000000000 + y = 0.430331483 + 0.3333333334 y = 0.430331483 + 0.3333333334 Combine like terms: 0.430331483 + 0.3333333334 = 0.7636648164 y = 0.7636648164 Simplifying y = 0.7636648164

Subproblem 2

y + -0.3333333334 = -0.430331483 Simplifying y + -0.3333333334 = -0.430331483 Reorder the terms: -0.3333333334 + y = -0.430331483 Solving -0.3333333334 + y = -0.430331483 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.3333333334' to each side of the equation. -0.3333333334 + 0.3333333334 + y = -0.430331483 + 0.3333333334 Combine like terms: -0.3333333334 + 0.3333333334 = 0.0000000000 0.0000000000 + y = -0.430331483 + 0.3333333334 y = -0.430331483 + 0.3333333334 Combine like terms: -0.430331483 + 0.3333333334 = -0.0969981496 y = -0.0969981496 Simplifying y = -0.0969981496

Solution

The solution to the problem is based on the solutions from the subproblems. y = {0.7636648164, -0.0969981496}

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