Let's rewrite the binomial as:
Using the binomial expansion, we get:
For the 15th term, we want the term where r is equal to 14, because of the fact that the first term starts when r = 0. Thus, for the 15th term, we need to include the 0th or the first term of the binomial expansion.
Thus, the fifteenth term is:
X will be equal to -3 here look at my work
The answer is a. john
hope this helps!
Answer:
B
Step-by-step explanation:
4 times 5 = 20
-2 times 1 = -2
20 - -2 = 18
I'm currently doing a test that includes this question, but i do believe it is C!