4y^2+15y+16=0

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Solution for 4y^2+15y+16=0 equation:


Simplifying
4y2 + 15y + 16 = 0

Reorder the terms:
16 + 15y + 4y2 = 0

Solving
16 + 15y + 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'.
4 + 3.75y + y2 = 0

Move the constant term to the right:

Add '-4' to each side of the equation.
4 + 3.75y + -4 + y2 = 0 + -4

Reorder the terms:
4 + -4 + 3.75y + y2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + 3.75y + y2 = 0 + -4
3.75y + y2 = 0 + -4

Combine like terms: 0 + -4 = -4
3.75y + y2 = -4

The y term is 3.75y.  Take half its coefficient (1.875).
Square it (3.515625) and add it to both sides.

Add '3.515625' to each side of the equation.
3.75y + 3.515625 + y2 = -4 + 3.515625

Reorder the terms:
3.515625 + 3.75y + y2 = -4 + 3.515625

Combine like terms: -4 + 3.515625 = -0.484375
3.515625 + 3.75y + y2 = -0.484375

Factor a perfect square on the left side:
(y + 1.875)(y + 1.875) = -0.484375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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