hey everyone, i would be so greatful if someone could answer the following questions for me, i have tired them over and over, and im still not understand it!! very dissapointing i must say, kids from school, wont help, they always keep to themselfs. anyways here are the questions, thanks in advance, any help would be appreciated.
Question 16) Find
a) the third term in (1-2x)^7
b) the fourth term in (1-x/2)^9
c) the fifth term in (1+x^2)^10
d) the sixth term in (3-2x)^8
e) the seventh term in (1-x/2)^10
Question 18) The fifth and sixth rows of Pascals triangle are shown below.
1 4 6 4 1
1 5 10 10 5 1
find the coefficient of x^3 in the expansion of (x+2)^5
Question 19) find the coefficient of x^6 in the expansion of (x^2+2/x)^6
Question 20) Let a be the coefficient of x^2 and b be the coeficient of x the expansion of the polynomial (2x-1)^4. Show that a= -3b
2007-01-26
23:25:53
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4 answers
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NFLS121a
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