18+11y+2y^2=0

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Solution for 18+11y+2y^2=0 equation:


Simplifying
18 + 11y + 2y2 = 0

Solving
18 + 11y + 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'.
9 + 5.5y + y2 = 0

Move the constant term to the right:

Add '-9' to each side of the equation.
9 + 5.5y + -9 + y2 = 0 + -9

Reorder the terms:
9 + -9 + 5.5y + y2 = 0 + -9

Combine like terms: 9 + -9 = 0
0 + 5.5y + y2 = 0 + -9
5.5y + y2 = 0 + -9

Combine like terms: 0 + -9 = -9
5.5y + y2 = -9

The y term is 5.5y.  Take half its coefficient (2.75).
Square it (7.5625) and add it to both sides.

Add '7.5625' to each side of the equation.
5.5y + 7.5625 + y2 = -9 + 7.5625

Reorder the terms:
7.5625 + 5.5y + y2 = -9 + 7.5625

Combine like terms: -9 + 7.5625 = -1.4375
7.5625 + 5.5y + y2 = -1.4375

Factor a perfect square on the left side:
(y + 2.75)(y + 2.75) = -1.4375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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