3y^2+8y=2y+9

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Solution for 3y^2+8y=2y+9 equation:


Simplifying
3y2 + 8y = 2y + 9

Reorder the terms:
8y + 3y2 = 2y + 9

Reorder the terms:
8y + 3y2 = 9 + 2y

Solving
8y + 3y2 = 9 + 2y

Solving for variable 'y'.

Reorder the terms:
-9 + 8y + -2y + 3y2 = 9 + 2y + -9 + -2y

Combine like terms: 8y + -2y = 6y
-9 + 6y + 3y2 = 9 + 2y + -9 + -2y

Reorder the terms:
-9 + 6y + 3y2 = 9 + -9 + 2y + -2y

Combine like terms: 9 + -9 = 0
-9 + 6y + 3y2 = 0 + 2y + -2y
-9 + 6y + 3y2 = 2y + -2y

Combine like terms: 2y + -2y = 0
-9 + 6y + 3y2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-3 + 2y + y2) = 0

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

Ignore the factor 3.

Subproblem 1

Set the factor '(-3 + -1y)' equal to zero and attempt to solve: Simplifying -3 + -1y = 0 Solving -3 + -1y = 0 Move all terms containing y to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -1y = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -1y = 0 + 3 -1y = 0 + 3 Combine like terms: 0 + 3 = 3 -1y = 3 Divide each side by '-1'. y = -3 Simplifying y = -3

Subproblem 2

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

Solution

y = {-3, 1}

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