Question

expand the binomial = (2x-3)^4

Answer 1

I got this one wrong but I don't know why/what I did wrong. I replaced the -3 with Y, and then added the -3 at the end

Answer 2

I got 2x^4+8x^3*-3+12x^2*9+8x*-27+81

Answer 3

u have to take 2 out
it will look like
(2^4)*(x-3/2)^4 now expand

Answer 4

I don't follow
why (x-3/2)

Answer 5

because u will get the form (x-a)^n u can also keep is as (2x-3)^4

Answer 6

then would the next one be 4(2x-3)^3

Answer 7

which one are you working on?

Answer 8

on the triangle for the 4th row first there is a 1 then a 4. for that 4 would it = 4(2x-3)^3 you know what I mean?

Answer 9

where did you get 4(2x-3)^3 from? is it a new problem ?

Answer 10

no

Answer 11

i just want to know how to do (2x-3)^4

Answer 12

He took the 4 out of the power and placed in front and subtracted 1 from N almost like taking the derivative of the function

Answer 13

Do you know what the binomial theorem says?

Answer 14

were you being taught to expand using Pascal triangle or the formula for (x+y)^n ?

Answer 15

i am used to using the triangle

Answer 16

i don't know how to use it with (2x-3)^4 tho

Answer 17

the trick is this: first, since n = 4, you know you'll have 5 (yes five) terms.

so do this:

Answer 18

that is suppose to be in one line, but i'm out of room.

Next, fill in the exponents.

Answer 19

now next is -3, so fill in the -3's