Question

help me and i will mark u as brainlist​

Answer 1

Step-by-step explanation:

-3÷3

-81÷9

0÷3

-4÷2

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Answer 2

• There is not an expansion for this by the usual binomial expansion. However, there is one by the generalized binomial theorem, which gives, for n∈Z+,

• (1−x)−n= ∞∑k=0 (n+k−1n−1)xk

Factor out a from your expression and replace adding b with subtracting (−b):

Factor out a from your expression and replace adding b with subtracting (−b):(a+b)−1=a−1(1−(−ba))−1

Factor out a from your expression and replace adding b with subtracting (−b):(a+b)−1=a−1(1−(−ba))−1Now apply the theorem for x=−b/a and n=1.