Question

Find the 6th term of (a + b)8.

56a5b3

56a3b5

56a2b6

56ab7

Answer 1

okay so the 6th term u know is going to be 56 so then you know that a is 5 less than 8 and b is 5 less than 8

Answer 2

so b?

Answer 3

yes, and sorry im horrible at explaining

Answer 4

haha its okay thanks

Answer 5

yep

Answer 6

u know how to do this one

Answer 7

Find the 4th terms in (a + 4)^8.

-3594a5

3594a5

-3584a5

3584a5

Answer 8

same thing except it will be 4^5... multiply that then by 56

Answer 9

huh

Answer 10

sorry it is actually 4^3*56

Answer 11

oh so d

Answer 12

yes

Answer 13

could u help with one more please

Answer 14

sure.. this iz precalc right?

Answer 15

Find the 5th term in the expansion of (x – 3y)8.

5670x4y4

5670x3y5

5670x5y3

5670x2y6

Answer 16

no algebra 2

Answer 17

okay so u know that x has to be 4 and that y has to be 4

Answer 18

so a but why do we know it has to be 4

Answer 19

cause 8/2

Answer 20

orr

Answer 21

because if you wright it out a decreases every time. so here is what it would look like a^8, a^7, a^6, a^5, a^4, a^3, a^2, a^1, a^0... it is 8 terms so find the fifth one

Answer 22

make sense??

Answer 23

sorry no lol

Answer 24

i dont see how the 4 comes in

Answer 25

I wish i could show you it would make more sense, but my draw thing doesn't work.. haha but just like the first problem you had, you had to find the 6th term this is the same principle..

Answer 26

ohhhhhhhhhhhh i see now i think

Answer 27

thanks

Answer 28

no problem.. if u need anymore help just tag me and ill come help :)