0.12y(y-6)+0.06y=0.08y-0.70

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Solution for 0.12y(y-6)+0.06y=0.08y-0.70 equation:


Simplifying
0.12y(y + -6) + 0.06y = 0.08y + -0.70

Reorder the terms:
0.12y(-6 + y) + 0.06y = 0.08y + -0.70
(-6 * 0.12y + y * 0.12y) + 0.06y = 0.08y + -0.70
(-0.72y + 0.12y2) + 0.06y = 0.08y + -0.70

Reorder the terms:
-0.72y + 0.06y + 0.12y2 = 0.08y + -0.70

Combine like terms: -0.72y + 0.06y = -0.66y
-0.66y + 0.12y2 = 0.08y + -0.70

Reorder the terms:
-0.66y + 0.12y2 = -0.70 + 0.08y

Solving
-0.66y + 0.12y2 = -0.70 + 0.08y

Solving for variable 'y'.

Reorder the terms:
0.70 + -0.66y + -0.08y + 0.12y2 = -0.70 + 0.08y + 0.70 + -0.08y

Combine like terms: -0.66y + -0.08y = -0.74y
0.70 + -0.74y + 0.12y2 = -0.70 + 0.08y + 0.70 + -0.08y

Reorder the terms:
0.70 + -0.74y + 0.12y2 = -0.70 + 0.70 + 0.08y + -0.08y

Combine like terms: -0.70 + 0.70 = 0.00
0.70 + -0.74y + 0.12y2 = 0.00 + 0.08y + -0.08y
0.70 + -0.74y + 0.12y2 = 0.08y + -0.08y

Combine like terms: 0.08y + -0.08y = 0.00
0.70 + -0.74y + 0.12y2 = 0.00

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

Divide each side by '0.12'.
5.833333333 + -6.166666667y + y2 = 0

Move the constant term to the right:

Add '-5.833333333' to each side of the equation.
5.833333333 + -6.166666667y + -5.833333333 + y2 = 0 + -5.833333333

Reorder the terms:
5.833333333 + -5.833333333 + -6.166666667y + y2 = 0 + -5.833333333

Combine like terms: 5.833333333 + -5.833333333 = 0.000000000
0.000000000 + -6.166666667y + y2 = 0 + -5.833333333
-6.166666667y + y2 = 0 + -5.833333333

Combine like terms: 0 + -5.833333333 = -5.833333333
-6.166666667y + y2 = -5.833333333

The y term is -6.166666667y.  Take half its coefficient (-3.083333334).
Square it (9.506944449) and add it to both sides.

Add '9.506944449' to each side of the equation.
-6.166666667y + 9.506944449 + y2 = -5.833333333 + 9.506944449

Reorder the terms:
9.506944449 + -6.166666667y + y2 = -5.833333333 + 9.506944449

Combine like terms: -5.833333333 + 9.506944449 = 3.673611116
9.506944449 + -6.166666667y + y2 = 3.673611116

Factor a perfect square on the left side:
(y + -3.083333334)(y + -3.083333334) = 3.673611116

Calculate the square root of the right side: 1.916666668

Break this problem into two subproblems by setting 
(y + -3.083333334) equal to 1.916666668 and -1.916666668.

Subproblem 1

y + -3.083333334 = 1.916666668 Simplifying y + -3.083333334 = 1.916666668 Reorder the terms: -3.083333334 + y = 1.916666668 Solving -3.083333334 + y = 1.916666668 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '3.083333334' to each side of the equation. -3.083333334 + 3.083333334 + y = 1.916666668 + 3.083333334 Combine like terms: -3.083333334 + 3.083333334 = 0.000000000 0.000000000 + y = 1.916666668 + 3.083333334 y = 1.916666668 + 3.083333334 Combine like terms: 1.916666668 + 3.083333334 = 5.000000002 y = 5.000000002 Simplifying y = 5.000000002

Subproblem 2

y + -3.083333334 = -1.916666668 Simplifying y + -3.083333334 = -1.916666668 Reorder the terms: -3.083333334 + y = -1.916666668 Solving -3.083333334 + y = -1.916666668 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '3.083333334' to each side of the equation. -3.083333334 + 3.083333334 + y = -1.916666668 + 3.083333334 Combine like terms: -3.083333334 + 3.083333334 = 0.000000000 0.000000000 + y = -1.916666668 + 3.083333334 y = -1.916666668 + 3.083333334 Combine like terms: -1.916666668 + 3.083333334 = 1.166666666 y = 1.166666666 Simplifying y = 1.166666666

Solution

The solution to the problem is based on the solutions from the subproblems. y = {5.000000002, 1.166666666}

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