3y-y^2=47.5

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Solution for 3y-y^2=47.5 equation:


Simplifying
3y + -1y2 = 47.5

Solving
3y + -1y2 = 47.5

Solving for variable 'y'.

Reorder the terms:
-47.5 + 3y + -1y2 = 47.5 + -47.5

Combine like terms: 47.5 + -47.5 = 0.0
-47.5 + 3y + -1y2 = 0.0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
47.5 + -3y + y2 = 0.0

Move the constant term to the right:

Add '-47.5' to each side of the equation.
47.5 + -3y + -47.5 + y2 = 0.0 + -47.5

Reorder the terms:
47.5 + -47.5 + -3y + y2 = 0.0 + -47.5

Combine like terms: 47.5 + -47.5 = 0.0
0.0 + -3y + y2 = 0.0 + -47.5
-3y + y2 = 0.0 + -47.5

Combine like terms: 0.0 + -47.5 = -47.5
-3y + y2 = -47.5

The y term is -3y.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3y + 2.25 + y2 = -47.5 + 2.25

Reorder the terms:
2.25 + -3y + y2 = -47.5 + 2.25

Combine like terms: -47.5 + 2.25 = -45.25
2.25 + -3y + y2 = -45.25

Factor a perfect square on the left side:
(y + -1.5)(y + -1.5) = -45.25

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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