4y(y-1)=-19

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Solution for 4y(y-1)=-19 equation:


Simplifying
4y(y + -1) = -19

Reorder the terms:
4y(-1 + y) = -19
(-1 * 4y + y * 4y) = -19
(-4y + 4y2) = -19

Solving
-4y + 4y2 = -19

Solving for variable 'y'.

Reorder the terms:
19 + -4y + 4y2 = -19 + 19

Combine like terms: -19 + 19 = 0
19 + -4y + 4y2 = 0

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

Divide each side by '4'.
4.75 + -1y + y2 = 0

Move the constant term to the right:

Add '-4.75' to each side of the equation.
4.75 + -1y + -4.75 + y2 = 0 + -4.75

Reorder the terms:
4.75 + -4.75 + -1y + y2 = 0 + -4.75

Combine like terms: 4.75 + -4.75 = 0.00
0.00 + -1y + y2 = 0 + -4.75
-1y + y2 = 0 + -4.75

Combine like terms: 0 + -4.75 = -4.75
-1y + y2 = -4.75

The y term is -1y.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1y + 0.25 + y2 = -4.75 + 0.25

Reorder the terms:
0.25 + -1y + y2 = -4.75 + 0.25

Combine like terms: -4.75 + 0.25 = -4.5
0.25 + -1y + y2 = -4.5

Factor a perfect square on the left side:
(y + -0.5)(y + -0.5) = -4.5

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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