20y^2+7y+8=0

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Solution for 20y^2+7y+8=0 equation:


Simplifying
20y2 + 7y + 8 = 0

Reorder the terms:
8 + 7y + 20y2 = 0

Solving
8 + 7y + 20y2 = 0

Solving for variable 'y'.

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

Divide each side by '20'.
0.4 + 0.35y + y2 = 0

Move the constant term to the right:

Add '-0.4' to each side of the equation.
0.4 + 0.35y + -0.4 + y2 = 0 + -0.4

Reorder the terms:
0.4 + -0.4 + 0.35y + y2 = 0 + -0.4

Combine like terms: 0.4 + -0.4 = 0.0
0.0 + 0.35y + y2 = 0 + -0.4
0.35y + y2 = 0 + -0.4

Combine like terms: 0 + -0.4 = -0.4
0.35y + y2 = -0.4

The y term is 0.35y.  Take half its coefficient (0.175).
Square it (0.030625) and add it to both sides.

Add '0.030625' to each side of the equation.
0.35y + 0.030625 + y2 = -0.4 + 0.030625

Reorder the terms:
0.030625 + 0.35y + y2 = -0.4 + 0.030625

Combine like terms: -0.4 + 0.030625 = -0.369375
0.030625 + 0.35y + y2 = -0.369375

Factor a perfect square on the left side:
(y + 0.175)(y + 0.175) = -0.369375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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