(1+y)(3y-8)=0

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Solution for (1+y)(3y-8)=0 equation: 


Simplifying
(1 + y)(3y + -8) = 0

Reorder the terms:
(1 + y)(-8 + 3y) = 0

Multiply (1 + y) * (-8 + 3y)
(1(-8 + 3y) + y(-8 + 3y)) = 0
((-8 * 1 + 3y * 1) + y(-8 + 3y)) = 0
((-8 + 3y) + y(-8 + 3y)) = 0
(-8 + 3y + (-8 * y + 3y * y)) = 0
(-8 + 3y + (-8y + 3y2)) = 0

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

Solving
-8 + -5y + 3y2 = 0

Solving for variable 'y'.

Factor a trinomial.
(-1 + -1y)(8 + -3y) = 0


Subproblem 1
Set the factor '(-1 + -1y)' equal to zero and attempt to solve:

Simplifying
-1 + -1y = 0

Solving
-1 + -1y = 0

Move all terms containing y to the left, all other terms to the right.

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

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

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

Divide each side by '-1'.
y = -1

Simplifying
y = -1

Subproblem 2
Set the factor '(8 + -3y)' equal to zero and attempt to solve:

Simplifying
8 + -3y = 0

Solving
8 + -3y = 0

Move all terms containing y to the left, all other terms to the right.

Add '-8' to each side of the equation.
8 + -8 + -3y = 0 + -8

Combine like terms: 8 + -8 = 0
0 + -3y = 0 + -8
-3y = 0 + -8

Combine like terms: 0 + -8 = -8
-3y = -8

Divide each side by '-3'.
y = 2.666666667

Simplifying
y = 2.666666667
Solution
y = {-1, 2.666666667}

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