2y^2+7y+39=0

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Solution for 2y^2+7y+39=0 equation:


Simplifying
2y2 + 7y + 39 = 0

Reorder the terms:
39 + 7y + 2y2 = 0

Solving
39 + 7y + 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'.
19.5 + 3.5y + y2 = 0

Move the constant term to the right:

Add '-19.5' to each side of the equation.
19.5 + 3.5y + -19.5 + y2 = 0 + -19.5

Reorder the terms:
19.5 + -19.5 + 3.5y + y2 = 0 + -19.5

Combine like terms: 19.5 + -19.5 = 0.0
0.0 + 3.5y + y2 = 0 + -19.5
3.5y + y2 = 0 + -19.5

Combine like terms: 0 + -19.5 = -19.5
3.5y + y2 = -19.5

The y term is 3.5y.  Take half its coefficient (1.75).
Square it (3.0625) and add it to both sides.

Add '3.0625' to each side of the equation.
3.5y + 3.0625 + y2 = -19.5 + 3.0625

Reorder the terms:
3.0625 + 3.5y + y2 = -19.5 + 3.0625

Combine like terms: -19.5 + 3.0625 = -16.4375
3.0625 + 3.5y + y2 = -16.4375

Factor a perfect square on the left side:
(y + 1.75)(y + 1.75) = -16.4375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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