9y^2+37y+9=

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Solution for 9y^2+37y+9= equation:


Simplifying
9y2 + 37y + 9 = 0

Reorder the terms:
9 + 37y + 9y2 = 0

Solving
9 + 37y + 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'.
1 + 4.111111111y + y2 = 0

Move the constant term to the right:

Add '-1' to each side of the equation.
1 + 4.111111111y + -1 + y2 = 0 + -1

Reorder the terms:
1 + -1 + 4.111111111y + y2 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + 4.111111111y + y2 = 0 + -1
4.111111111y + y2 = 0 + -1

Combine like terms: 0 + -1 = -1
4.111111111y + y2 = -1

The y term is 4.111111111y.  Take half its coefficient (2.055555556).
Square it (4.225308644) and add it to both sides.

Add '4.225308644' to each side of the equation.
4.111111111y + 4.225308644 + y2 = -1 + 4.225308644

Reorder the terms:
4.225308644 + 4.111111111y + y2 = -1 + 4.225308644

Combine like terms: -1 + 4.225308644 = 3.225308644
4.225308644 + 4.111111111y + y2 = 3.225308644

Factor a perfect square on the left side:
(y + 2.055555556)(y + 2.055555556) = 3.225308644

Calculate the square root of the right side: 1.795914431

Break this problem into two subproblems by setting 
(y + 2.055555556) equal to 1.795914431 and -1.795914431.

Subproblem 1

y + 2.055555556 = 1.795914431 Simplifying y + 2.055555556 = 1.795914431 Reorder the terms: 2.055555556 + y = 1.795914431 Solving 2.055555556 + y = 1.795914431 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-2.055555556' to each side of the equation. 2.055555556 + -2.055555556 + y = 1.795914431 + -2.055555556 Combine like terms: 2.055555556 + -2.055555556 = 0.000000000 0.000000000 + y = 1.795914431 + -2.055555556 y = 1.795914431 + -2.055555556 Combine like terms: 1.795914431 + -2.055555556 = -0.259641125 y = -0.259641125 Simplifying y = -0.259641125

Subproblem 2

y + 2.055555556 = -1.795914431 Simplifying y + 2.055555556 = -1.795914431 Reorder the terms: 2.055555556 + y = -1.795914431 Solving 2.055555556 + y = -1.795914431 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-2.055555556' to each side of the equation. 2.055555556 + -2.055555556 + y = -1.795914431 + -2.055555556 Combine like terms: 2.055555556 + -2.055555556 = 0.000000000 0.000000000 + y = -1.795914431 + -2.055555556 y = -1.795914431 + -2.055555556 Combine like terms: -1.795914431 + -2.055555556 = -3.851469987 y = -3.851469987 Simplifying y = -3.851469987

Solution

The solution to the problem is based on the solutions from the subproblems. y = {-0.259641125, -3.851469987}

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