5(y+9)(-y+1)=0

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Solution for 5(y+9)(-y+1)=0 equation:


Simplifying
5(y + 9)(-1y + 1) = 0

Reorder the terms:
5(9 + y)(-1y + 1) = 0

Reorder the terms:
5(9 + y)(1 + -1y) = 0

Multiply (9 + y) * (1 + -1y)
5(9(1 + -1y) + y(1 + -1y)) = 0
5((1 * 9 + -1y * 9) + y(1 + -1y)) = 0
5((9 + -9y) + y(1 + -1y)) = 0
5(9 + -9y + (1 * y + -1y * y)) = 0
5(9 + -9y + (1y + -1y2)) = 0

Combine like terms: -9y + 1y = -8y
5(9 + -8y + -1y2) = 0
(9 * 5 + -8y * 5 + -1y2 * 5) = 0
(45 + -40y + -5y2) = 0

Solving
45 + -40y + -5y2 = 0

Solving for variable 'y'.

Factor out the Greatest Common Factor (GCF), '5'.
5(9 + -8y + -1y2) = 0

Factor a trinomial.
5((1 + -1y)(9 + y)) = 0

Ignore the factor 5.

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 '(9 + y)' equal to zero and attempt to solve: Simplifying 9 + y = 0 Solving 9 + y = 0 Move all terms containing y to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + y = 0 + -9 Combine like terms: 9 + -9 = 0 0 + y = 0 + -9 y = 0 + -9 Combine like terms: 0 + -9 = -9 y = -9 Simplifying y = -9

Solution

y = {1, -9}

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