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22-02-2016 13:30:00 +0000
Good day all
This session has ended for today
The concept of binomial theorem and expansion is often tested on JAMB and other exams. so lets take a quick look into this topics.
Binomials - A polynomial is a series of terms. when there are only two terms the expression is called a binomial.
Trionomial- A three-termed expression is called a trinomial.
The Expansion of (a + b)n for any value of n is
(a + b)n = an + nan-1b1 + n (n-1) an-2b2 / 2! + n(n-1)(n-2)an-3/ 3! + ... +bn
Can anyone provide solutions to the following;
(a) Calculate the value of (2.01)3correct to 3 s.f., without using tables.
(b) Expand ( 1 + 2x )4
(c) Find the third term in the expansion of (a + b)5
(d) Find the coefficient of x10 in the expansion of (2 + x)12
(e) In the expansion of (1-2x)3,write down the number of terms.
Please give us your feedback after the session: http://goo.gl/forms/XVVy7QkNb5
22-02-2016 14:38:00 +0000
d is 66 rather not c
22-02-2016 14:40:00 +0000
@Adewale thanks for the correct answer in question (b)
22-02-2016 15:09:00 +0000
@Adewale the correct answer to question (d) is 16896, since 1 2 combination 10 gives 66 x 2^8 = 16896
22-02-2016 15:15:00 +0000
using bionomial theorem.. I have
approximately to 8.12
22-02-2016 15:16:00 +0000
@Adewale correct answer keep it on
22-02-2016 15:19:00 +0000
Hi class are we still there
22-02-2016 15:35:00 +0000
yea,It's just that I am lost,Lyk sooo lost
22-02-2016 15:41:00 +0000
@Saint Alpha from what point of view are you lost
22-02-2016 15:45:00 +0000
Need more explanation on binomial theorem and working on question c and e thank you
22-02-2016 15:57:00 +0000