3y²+3y-36
please give answer in explanation
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Answer:
3y² - 3y - 36
Dividing by 3
⇒ y² - y - 12
⇒ y² - 4y + 3y - 12
⇒ y (y - 4) + 3 (y-4)
⇒ (y - 4) (y-3)
⇒ y - 4 = 0 and y - 3 = 0
⇒ y = 3 , 4
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