y(5y-6)=38

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Solution for y(5y-6)=38 equation:


Simplifying
y(5y + -6) = 38

Reorder the terms:
y(-6 + 5y) = 38
(-6 * y + 5y * y) = 38
(-6y + 5y2) = 38

Solving
-6y + 5y2 = 38

Solving for variable 'y'.

Reorder the terms:
-38 + -6y + 5y2 = 38 + -38

Combine like terms: 38 + -38 = 0
-38 + -6y + 5y2 = 0

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

Divide each side by '5'.
-7.6 + -1.2y + y2 = 0

Move the constant term to the right:

Add '7.6' to each side of the equation.
-7.6 + -1.2y + 7.6 + y2 = 0 + 7.6

Reorder the terms:
-7.6 + 7.6 + -1.2y + y2 = 0 + 7.6

Combine like terms: -7.6 + 7.6 = 0.0
0.0 + -1.2y + y2 = 0 + 7.6
-1.2y + y2 = 0 + 7.6

Combine like terms: 0 + 7.6 = 7.6
-1.2y + y2 = 7.6

The y term is -1.2y.  Take half its coefficient (-0.6).
Square it (0.36) and add it to both sides.

Add '0.36' to each side of the equation.
-1.2y + 0.36 + y2 = 7.6 + 0.36

Reorder the terms:
0.36 + -1.2y + y2 = 7.6 + 0.36

Combine like terms: 7.6 + 0.36 = 7.96
0.36 + -1.2y + y2 = 7.96

Factor a perfect square on the left side:
(y + -0.6)(y + -0.6) = 7.96

Calculate the square root of the right side: 2.821347196

Break this problem into two subproblems by setting 
(y + -0.6) equal to 2.821347196 and -2.821347196.

Subproblem 1

y + -0.6 = 2.821347196 Simplifying y + -0.6 = 2.821347196 Reorder the terms: -0.6 + y = 2.821347196 Solving -0.6 + y = 2.821347196 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.6' to each side of the equation. -0.6 + 0.6 + y = 2.821347196 + 0.6 Combine like terms: -0.6 + 0.6 = 0.0 0.0 + y = 2.821347196 + 0.6 y = 2.821347196 + 0.6 Combine like terms: 2.821347196 + 0.6 = 3.421347196 y = 3.421347196 Simplifying y = 3.421347196

Subproblem 2

y + -0.6 = -2.821347196 Simplifying y + -0.6 = -2.821347196 Reorder the terms: -0.6 + y = -2.821347196 Solving -0.6 + y = -2.821347196 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.6' to each side of the equation. -0.6 + 0.6 + y = -2.821347196 + 0.6 Combine like terms: -0.6 + 0.6 = 0.0 0.0 + y = -2.821347196 + 0.6 y = -2.821347196 + 0.6 Combine like terms: -2.821347196 + 0.6 = -2.221347196 y = -2.221347196 Simplifying y = -2.221347196

Solution

The solution to the problem is based on the solutions from the subproblems. y = {3.421347196, -2.221347196}

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