0=3y^2-18y+17

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Solution for 0=3y^2-18y+17 equation:


Simplifying
0 = 3y2 + -18y + 17

Reorder the terms:
0 = 17 + -18y + 3y2

Solving
0 = 17 + -18y + 3y2

Solving for variable 'y'.

Combine like terms: 0 + -17 = -17
-17 + 18y + -3y2 = 17 + -18y + 3y2 + -17 + 18y + -3y2

Reorder the terms:
-17 + 18y + -3y2 = 17 + -17 + -18y + 18y + 3y2 + -3y2

Combine like terms: 17 + -17 = 0
-17 + 18y + -3y2 = 0 + -18y + 18y + 3y2 + -3y2
-17 + 18y + -3y2 = -18y + 18y + 3y2 + -3y2

Combine like terms: -18y + 18y = 0
-17 + 18y + -3y2 = 0 + 3y2 + -3y2
-17 + 18y + -3y2 = 3y2 + -3y2

Combine like terms: 3y2 + -3y2 = 0
-17 + 18y + -3y2 = 0

Begin completing the square.  Divide all terms by
-3 the coefficient of the squared term: 

Divide each side by '-3'.
5.666666667 + -6y + y2 = 0

Move the constant term to the right:

Add '-5.666666667' to each side of the equation.
5.666666667 + -6y + -5.666666667 + y2 = 0 + -5.666666667

Reorder the terms:
5.666666667 + -5.666666667 + -6y + y2 = 0 + -5.666666667

Combine like terms: 5.666666667 + -5.666666667 = 0.000000000
0.000000000 + -6y + y2 = 0 + -5.666666667
-6y + y2 = 0 + -5.666666667

Combine like terms: 0 + -5.666666667 = -5.666666667
-6y + y2 = -5.666666667

The y term is -6y.  Take half its coefficient (-3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
-6y + 9 + y2 = -5.666666667 + 9

Reorder the terms:
9 + -6y + y2 = -5.666666667 + 9

Combine like terms: -5.666666667 + 9 = 3.333333333
9 + -6y + y2 = 3.333333333

Factor a perfect square on the left side:
(y + -3)(y + -3) = 3.333333333

Calculate the square root of the right side: 1.825741858

Break this problem into two subproblems by setting 
(y + -3) equal to 1.825741858 and -1.825741858.

Subproblem 1

y + -3 = 1.825741858 Simplifying y + -3 = 1.825741858 Reorder the terms: -3 + y = 1.825741858 Solving -3 + y = 1.825741858 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + y = 1.825741858 + 3 Combine like terms: -3 + 3 = 0 0 + y = 1.825741858 + 3 y = 1.825741858 + 3 Combine like terms: 1.825741858 + 3 = 4.825741858 y = 4.825741858 Simplifying y = 4.825741858

Subproblem 2

y + -3 = -1.825741858 Simplifying y + -3 = -1.825741858 Reorder the terms: -3 + y = -1.825741858 Solving -3 + y = -1.825741858 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + y = -1.825741858 + 3 Combine like terms: -3 + 3 = 0 0 + y = -1.825741858 + 3 y = -1.825741858 + 3 Combine like terms: -1.825741858 + 3 = 1.174258142 y = 1.174258142 Simplifying y = 1.174258142

Solution

The solution to the problem is based on the solutions from the subproblems. y = {4.825741858, 1.174258142}

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