11y+3=4y(2y+3)

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Solution for 11y+3=4y(2y+3) equation:


Simplifying
11y + 3 = 4y(2y + 3)

Reorder the terms:
3 + 11y = 4y(2y + 3)

Reorder the terms:
3 + 11y = 4y(3 + 2y)
3 + 11y = (3 * 4y + 2y * 4y)
3 + 11y = (12y + 8y2)

Solving
3 + 11y = 12y + 8y2

Solving for variable 'y'.

Combine like terms: 11y + -12y = -1y
3 + -1y + -8y2 = 12y + 8y2 + -12y + -8y2

Reorder the terms:
3 + -1y + -8y2 = 12y + -12y + 8y2 + -8y2

Combine like terms: 12y + -12y = 0
3 + -1y + -8y2 = 0 + 8y2 + -8y2
3 + -1y + -8y2 = 8y2 + -8y2

Combine like terms: 8y2 + -8y2 = 0
3 + -1y + -8y2 = 0

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

Divide each side by '-8'.
-0.375 + 0.125y + y2 = 0

Move the constant term to the right:

Add '0.375' to each side of the equation.
-0.375 + 0.125y + 0.375 + y2 = 0 + 0.375

Reorder the terms:
-0.375 + 0.375 + 0.125y + y2 = 0 + 0.375

Combine like terms: -0.375 + 0.375 = 0.000
0.000 + 0.125y + y2 = 0 + 0.375
0.125y + y2 = 0 + 0.375

Combine like terms: 0 + 0.375 = 0.375
0.125y + y2 = 0.375

The y term is 0.125y.  Take half its coefficient (0.0625).
Square it (0.00390625) and add it to both sides.

Add '0.00390625' to each side of the equation.
0.125y + 0.00390625 + y2 = 0.375 + 0.00390625

Reorder the terms:
0.00390625 + 0.125y + y2 = 0.375 + 0.00390625

Combine like terms: 0.375 + 0.00390625 = 0.37890625
0.00390625 + 0.125y + y2 = 0.37890625

Factor a perfect square on the left side:
(y + 0.0625)(y + 0.0625) = 0.37890625

Calculate the square root of the right side: 0.615553613

Break this problem into two subproblems by setting 
(y + 0.0625) equal to 0.615553613 and -0.615553613.

Subproblem 1

y + 0.0625 = 0.615553613 Simplifying y + 0.0625 = 0.615553613 Reorder the terms: 0.0625 + y = 0.615553613 Solving 0.0625 + y = 0.615553613 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.0625' to each side of the equation. 0.0625 + -0.0625 + y = 0.615553613 + -0.0625 Combine like terms: 0.0625 + -0.0625 = 0.0000 0.0000 + y = 0.615553613 + -0.0625 y = 0.615553613 + -0.0625 Combine like terms: 0.615553613 + -0.0625 = 0.553053613 y = 0.553053613 Simplifying y = 0.553053613

Subproblem 2

y + 0.0625 = -0.615553613 Simplifying y + 0.0625 = -0.615553613 Reorder the terms: 0.0625 + y = -0.615553613 Solving 0.0625 + y = -0.615553613 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.0625' to each side of the equation. 0.0625 + -0.0625 + y = -0.615553613 + -0.0625 Combine like terms: 0.0625 + -0.0625 = 0.0000 0.0000 + y = -0.615553613 + -0.0625 y = -0.615553613 + -0.0625 Combine like terms: -0.615553613 + -0.0625 = -0.678053613 y = -0.678053613 Simplifying y = -0.678053613

Solution

The solution to the problem is based on the solutions from the subproblems. y = {0.553053613, -0.678053613}

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