3y^2+6y=45

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Solution for 3y^2+6y=45 equation:


Simplifying
3y2 + 6y = 45

Reorder the terms:
6y + 3y2 = 45

Solving
6y + 3y2 = 45

Solving for variable 'y'.

Reorder the terms:
-45 + 6y + 3y2 = 45 + -45

Combine like terms: 45 + -45 = 0
-45 + 6y + 3y2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-15 + 2y + y2) = 0

Factor a trinomial.
3((-5 + -1y)(3 + -1y)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-5 + -1y)' equal to zero and attempt to solve: Simplifying -5 + -1y = 0 Solving -5 + -1y = 0 Move all terms containing y to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + -1y = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -1y = 0 + 5 -1y = 0 + 5 Combine like terms: 0 + 5 = 5 -1y = 5 Divide each side by '-1'. y = -5 Simplifying y = -5

Subproblem 2

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

Solution

y = {-5, 3}

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