20y^2-9y+30=0

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Solution for 20y^2-9y+30=0 equation:


Simplifying
20y2 + -9y + 30 = 0

Reorder the terms:
30 + -9y + 20y2 = 0

Solving
30 + -9y + 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'.
1.5 + -0.45y + y2 = 0

Move the constant term to the right:

Add '-1.5' to each side of the equation.
1.5 + -0.45y + -1.5 + y2 = 0 + -1.5

Reorder the terms:
1.5 + -1.5 + -0.45y + y2 = 0 + -1.5

Combine like terms: 1.5 + -1.5 = 0.0
0.0 + -0.45y + y2 = 0 + -1.5
-0.45y + y2 = 0 + -1.5

Combine like terms: 0 + -1.5 = -1.5
-0.45y + y2 = -1.5

The y term is -0.45y.  Take half its coefficient (-0.225).
Square it (0.050625) and add it to both sides.

Add '0.050625' to each side of the equation.
-0.45y + 0.050625 + y2 = -1.5 + 0.050625

Reorder the terms:
0.050625 + -0.45y + y2 = -1.5 + 0.050625

Combine like terms: -1.5 + 0.050625 = -1.449375
0.050625 + -0.45y + y2 = -1.449375

Factor a perfect square on the left side:
(y + -0.225)(y + -0.225) = -1.449375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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