Sign In
Ask Question
Christina Nichols
Mathematics
10 October, 20:12
Find the 4th term of the expansion of (2a-b) ^7
+5
Answers (
1
)
Kamren Hinton
10 October, 20:21
0
-560a^4b^3.
Step-by-step explanation:
For a binomial expansion:
(r + 1) th term of (a + b) ^n = nCr a^ (n-r) b^r.
So the 4th term of (2a - b) ^7
= (3 + 1) th term = 7C3 (2a) ^ (7-3) (-b) ^3
= 35 * 16a^4 * - b^3
= - 560a^4b^3 (answer).
Comment
Complaint
Link
Know the Answer?
Answer
Not Sure About the Answer?
Find an answer to your question 👍
“Find the 4th term of the expansion of (2a-b) ^7 ...”
in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers
You Might be Interested in
Refer to the two statements below. Which pair of words will make the statements true? 1) 0 is __ than 4 2) - 3 is __ than 4 less for statement 1 and less for statement 2 greater for statement 1 and less for statement 2 less for statement 1 and
Answers (1)
To what unit rate does 96/12 simplify? A. 8/1 B. 9/1 C. 10/1 D. 12/1
Answers (2)
Round to the nearest thousand - 0.867796832
Answers (1)
Why is looking at cash flow an important step in a good financial plan?
Answers (1)
What are the values for x when 2x+2=9
Answers (1)
New Questions in Mathematics
U l ease distribution and make the product more available. O give out more free samples. 4. Which of the following is true regarding the trial stage of the consumer adoption process?
Answers (1)
1/4 of 12 water bottles were used, how many water bottles were not used
Answers (1)
Simplify. 14a^2bc^4/21abc^6
Answers (1)
Determine the standard form of the equation of the line that passes through (-7 8) and (0 - 8)
Answers (1)
Explain the role of the GCF in factoring a polynomial.
Answers (1)
Home
»
Mathematics
» Find the 4th term of the expansion of (2a-b) ^7
Sign In
Sign Up
Forgot Password?