2. A vine called the mile-a-minute weed is known for growing at a very fast rate. It can grow up to 0.5 ft per day. How fast in
2 answers:
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The second term of the expansion is .
Solution:
Given expression:
To find the second term of the expansion.
Using Binomial theorem,
Here, a = a and b = –b
Substitute i = 0, we get
Substitute i = 1, we get
Substitute i = 2, we get
Substitute i = 3, we get
Substitute i = 4, we get
Therefore,
Hence the second term of the expansion is .