9(y+6)+2y(y+3)=

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Solution for 9(y+6)+2y(y+3)= equation:


Simplifying
9(y + 6) + 2y(y + 3) = 0

Reorder the terms:
9(6 + y) + 2y(y + 3) = 0
(6 * 9 + y * 9) + 2y(y + 3) = 0
(54 + 9y) + 2y(y + 3) = 0

Reorder the terms:
54 + 9y + 2y(3 + y) = 0
54 + 9y + (3 * 2y + y * 2y) = 0
54 + 9y + (6y + 2y2) = 0

Combine like terms: 9y + 6y = 15y
54 + 15y + 2y2 = 0

Solving
54 + 15y + 2y2 = 0

Solving for variable 'y'.

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

Divide each side by '2'.
27 + 7.5y + y2 = 0

Move the constant term to the right:

Add '-27' to each side of the equation.
27 + 7.5y + -27 + y2 = 0 + -27

Reorder the terms:
27 + -27 + 7.5y + y2 = 0 + -27

Combine like terms: 27 + -27 = 0
0 + 7.5y + y2 = 0 + -27
7.5y + y2 = 0 + -27

Combine like terms: 0 + -27 = -27
7.5y + y2 = -27

The y term is 7.5y.  Take half its coefficient (3.75).
Square it (14.0625) and add it to both sides.

Add '14.0625' to each side of the equation.
7.5y + 14.0625 + y2 = -27 + 14.0625

Reorder the terms:
14.0625 + 7.5y + y2 = -27 + 14.0625

Combine like terms: -27 + 14.0625 = -12.9375
14.0625 + 7.5y + y2 = -12.9375

Factor a perfect square on the left side:
(y + 3.75)(y + 3.75) = -12.9375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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