Factorise of y(y-2) +9 (2-4)
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Factorization :-
y(y - 2) + 9(2 - y) = 0
⇒ y² - 2y +18 - 9y = 0
⇒ y² - 2y - 9y +18 = 0
⇒ y(y - 2) -9(y - 2) = 0
⇒ (y - 2) × (y - 9) = 0
⇒ y = 2 OR y = 9
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