9y^2-46y+52=0

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Solution for 9y^2-46y+52=0 equation:


Simplifying
9y2 + -46y + 52 = 0

Reorder the terms:
52 + -46y + 9y2 = 0

Solving
52 + -46y + 9y2 = 0

Solving for variable 'y'.

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

Divide each side by '9'.
5.777777778 + -5.111111111y + y2 = 0

Move the constant term to the right:

Add '-5.777777778' to each side of the equation.
5.777777778 + -5.111111111y + -5.777777778 + y2 = 0 + -5.777777778

Reorder the terms:
5.777777778 + -5.777777778 + -5.111111111y + y2 = 0 + -5.777777778

Combine like terms: 5.777777778 + -5.777777778 = 0.000000000
0.000000000 + -5.111111111y + y2 = 0 + -5.777777778
-5.111111111y + y2 = 0 + -5.777777778

Combine like terms: 0 + -5.777777778 = -5.777777778
-5.111111111y + y2 = -5.777777778

The y term is -5.111111111y.  Take half its coefficient (-2.555555556).
Square it (6.530864200) and add it to both sides.

Add '6.530864200' to each side of the equation.
-5.111111111y + 6.530864200 + y2 = -5.777777778 + 6.530864200

Reorder the terms:
6.530864200 + -5.111111111y + y2 = -5.777777778 + 6.530864200

Combine like terms: -5.777777778 + 6.530864200 = 0.753086422
6.530864200 + -5.111111111y + y2 = 0.753086422

Factor a perfect square on the left side:
(y + -2.555555556)(y + -2.555555556) = 0.753086422

Calculate the square root of the right side: 0.867805521

Break this problem into two subproblems by setting 
(y + -2.555555556) equal to 0.867805521 and -0.867805521.

Subproblem 1

y + -2.555555556 = 0.867805521 Simplifying y + -2.555555556 = 0.867805521 Reorder the terms: -2.555555556 + y = 0.867805521 Solving -2.555555556 + y = 0.867805521 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '2.555555556' to each side of the equation. -2.555555556 + 2.555555556 + y = 0.867805521 + 2.555555556 Combine like terms: -2.555555556 + 2.555555556 = 0.000000000 0.000000000 + y = 0.867805521 + 2.555555556 y = 0.867805521 + 2.555555556 Combine like terms: 0.867805521 + 2.555555556 = 3.423361077 y = 3.423361077 Simplifying y = 3.423361077

Subproblem 2

y + -2.555555556 = -0.867805521 Simplifying y + -2.555555556 = -0.867805521 Reorder the terms: -2.555555556 + y = -0.867805521 Solving -2.555555556 + y = -0.867805521 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '2.555555556' to each side of the equation. -2.555555556 + 2.555555556 + y = -0.867805521 + 2.555555556 Combine like terms: -2.555555556 + 2.555555556 = 0.000000000 0.000000000 + y = -0.867805521 + 2.555555556 y = -0.867805521 + 2.555555556 Combine like terms: -0.867805521 + 2.555555556 = 1.687750035 y = 1.687750035 Simplifying y = 1.687750035

Solution

The solution to the problem is based on the solutions from the subproblems. y = {3.423361077, 1.687750035}

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