Find the coffiecient x^2in (2x^2-5)(4+3x^2)
Answers
Answered by
4
By the Binomial Theorem, [2x-(1/2x)]^6 can be expanded to the sum as k goes from zero to 6 of (6 choose k)×(2x)k×(-1/2x)6-k. The only time we will be left with an x2 term is when k=4, since we'll have some coefficient multiplied by x4/x2. So, we'll have (6 choose 4) × (2x)4×(-1/2x)2, which is 15×16x4×(1/4x2)= 60x2.
himanshusingh52:
chal choodo
ohhk
jab se ab time mila ha apko baat kr na ka ager apko baat nhi kar ni ho toh bata sak thi safe safe fir ma apko msg hi nhi kr na ka
arre u r my friend
Ha toh
toh apko problem kya ha vo bata do
nhi mere ko ni h kucch pblm
ohhh
chalo Kyo ni
What are you doing?
Similar questions