(5y+8)(1+y)=0

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Solution for (5y+8)(1+y)=0 equation:


Simplifying
(5y + 8)(1 + y) = 0

Reorder the terms:
(8 + 5y)(1 + y) = 0

Multiply (8 + 5y) * (1 + y)
(8(1 + y) + 5y * (1 + y)) = 0
((1 * 8 + y * 8) + 5y * (1 + y)) = 0
((8 + 8y) + 5y * (1 + y)) = 0
(8 + 8y + (1 * 5y + y * 5y)) = 0
(8 + 8y + (5y + 5y2)) = 0

Combine like terms: 8y + 5y = 13y
(8 + 13y + 5y2) = 0

Solving
8 + 13y + 5y2 = 0

Solving for variable 'y'.

Factor a trinomial.
(8 + 5y)(1 + y) = 0

Subproblem 1

Set the factor '(8 + 5y)' equal to zero and attempt to solve: Simplifying 8 + 5y = 0 Solving 8 + 5y = 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 + 5y = 0 + -8 Combine like terms: 8 + -8 = 0 0 + 5y = 0 + -8 5y = 0 + -8 Combine like terms: 0 + -8 = -8 5y = -8 Divide each side by '5'. y = -1.6 Simplifying y = -1.6

Subproblem 2

Set the factor '(1 + y)' equal to zero and attempt to solve: Simplifying 1 + y = 0 Solving 1 + y = 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 + y = 0 + -1 Combine like terms: 1 + -1 = 0 0 + y = 0 + -1 y = 0 + -1 Combine like terms: 0 + -1 = -1 y = -1 Simplifying y = -1

Solution

y = {-1.6, -1}

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