4y^2+3y+9=0

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Solution for 4y^2+3y+9=0 equation:


Simplifying
4y2 + 3y + 9 = 0

Reorder the terms:
9 + 3y + 4y2 = 0

Solving
9 + 3y + 4y2 = 0

Solving for variable 'y'.

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

Divide each side by '4'.
2.25 + 0.75y + y2 = 0

Move the constant term to the right:

Add '-2.25' to each side of the equation.
2.25 + 0.75y + -2.25 + y2 = 0 + -2.25

Reorder the terms:
2.25 + -2.25 + 0.75y + y2 = 0 + -2.25

Combine like terms: 2.25 + -2.25 = 0.00
0.00 + 0.75y + y2 = 0 + -2.25
0.75y + y2 = 0 + -2.25

Combine like terms: 0 + -2.25 = -2.25
0.75y + y2 = -2.25

The y term is 0.75y.  Take half its coefficient (0.375).
Square it (0.140625) and add it to both sides.

Add '0.140625' to each side of the equation.
0.75y + 0.140625 + y2 = -2.25 + 0.140625

Reorder the terms:
0.140625 + 0.75y + y2 = -2.25 + 0.140625

Combine like terms: -2.25 + 0.140625 = -2.109375
0.140625 + 0.75y + y2 = -2.109375

Factor a perfect square on the left side:
(y + 0.375)(y + 0.375) = -2.109375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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