3y^2+42y=-135

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Solution for 3y^2+42y=-135 equation:


Simplifying
3y2 + 42y = -135

Reorder the terms:
42y + 3y2 = -135

Solving
42y + 3y2 = -135

Solving for variable 'y'.

Reorder the terms:
135 + 42y + 3y2 = -135 + 135

Combine like terms: -135 + 135 = 0
135 + 42y + 3y2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(45 + 14y + y2) = 0

Factor a trinomial.
3((9 + y)(5 + y)) = 0

Ignore the factor 3.

Subproblem 1

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

Subproblem 2

Set the factor '(5 + y)' equal to zero and attempt to solve: Simplifying 5 + y = 0 Solving 5 + y = 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 + y = 0 + -5 Combine like terms: 5 + -5 = 0 0 + y = 0 + -5 y = 0 + -5 Combine like terms: 0 + -5 = -5 y = -5 Simplifying y = -5

Solution

y = {-9, -5}

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