Question

what is cofficent of y² in the the expression (y-1)³ is​

Answer 1

Answer:

-1^2

Step-by-step explanation:

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Answer 2

Answer: -3

Step-by-step explanation:

(y-1)³ = (y)³-3(y)²(1) + 3(y)(1)² -(1)³

[(a-b)= (a)³-3(a)²(b)+3(a)(b)²-(b)³]

y³-3y²+3y-1

Coeffincent of y² in the expression (y-1)³

=-3