5y+5=y(8-2y)

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Solution for 5y+5=y(8-2y) equation:


Simplifying
5y + 5 = y(8 + -2y)

Reorder the terms:
5 + 5y = y(8 + -2y)
5 + 5y = (8 * y + -2y * y)
5 + 5y = (8y + -2y2)

Solving
5 + 5y = 8y + -2y2

Solving for variable 'y'.

Combine like terms: 5y + -8y = -3y
5 + -3y + 2y2 = 8y + -2y2 + -8y + 2y2

Reorder the terms:
5 + -3y + 2y2 = 8y + -8y + -2y2 + 2y2

Combine like terms: 8y + -8y = 0
5 + -3y + 2y2 = 0 + -2y2 + 2y2
5 + -3y + 2y2 = -2y2 + 2y2

Combine like terms: -2y2 + 2y2 = 0
5 + -3y + 2y2 = 0

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

Divide each side by '2'.
2.5 + -1.5y + y2 = 0

Move the constant term to the right:

Add '-2.5' to each side of the equation.
2.5 + -1.5y + -2.5 + y2 = 0 + -2.5

Reorder the terms:
2.5 + -2.5 + -1.5y + y2 = 0 + -2.5

Combine like terms: 2.5 + -2.5 = 0.0
0.0 + -1.5y + y2 = 0 + -2.5
-1.5y + y2 = 0 + -2.5

Combine like terms: 0 + -2.5 = -2.5
-1.5y + y2 = -2.5

The y term is -1.5y.  Take half its coefficient (-0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
-1.5y + 0.5625 + y2 = -2.5 + 0.5625

Reorder the terms:
0.5625 + -1.5y + y2 = -2.5 + 0.5625

Combine like terms: -2.5 + 0.5625 = -1.9375
0.5625 + -1.5y + y2 = -1.9375

Factor a perfect square on the left side:
(y + -0.75)(y + -0.75) = -1.9375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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