-4y^2+18y-125=0

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Solution for -4y^2+18y-125=0 equation:


Simplifying
-4y2 + 18y + -125 = 0

Reorder the terms:
-125 + 18y + -4y2 = 0

Solving
-125 + 18y + -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'.
31.25 + -4.5y + y2 = 0

Move the constant term to the right:

Add '-31.25' to each side of the equation.
31.25 + -4.5y + -31.25 + y2 = 0 + -31.25

Reorder the terms:
31.25 + -31.25 + -4.5y + y2 = 0 + -31.25

Combine like terms: 31.25 + -31.25 = 0.00
0.00 + -4.5y + y2 = 0 + -31.25
-4.5y + y2 = 0 + -31.25

Combine like terms: 0 + -31.25 = -31.25
-4.5y + y2 = -31.25

The y term is -4.5y.  Take half its coefficient (-2.25).
Square it (5.0625) and add it to both sides.

Add '5.0625' to each side of the equation.
-4.5y + 5.0625 + y2 = -31.25 + 5.0625

Reorder the terms:
5.0625 + -4.5y + y2 = -31.25 + 5.0625

Combine like terms: -31.25 + 5.0625 = -26.1875
5.0625 + -4.5y + y2 = -26.1875

Factor a perfect square on the left side:
(y + -2.25)(y + -2.25) = -26.1875

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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