Question

Expand (x + 3)^5.


x5 + 3x4 + 9x3 + 27x2 + 81x + 243

x5 + 5x4 + 100x3 + 250x2 + 135x + 243

x5 + 15x4 + 90x3 + 270x2 + 405x + 243

x5 + 15x4 + 45x3 + 90x2 + 135x + 243

Answer 1

i think its c

Answer 2

(x-3)^5 = x^5 -15x^4 + 90x^3 - 270x^2 + 405x - 243

Answer 3

so is it c

Answer 4

@chrperez28 what u said isn't one of the answer choices

Answer 5

yeah its C

Answer 6

thanks

Answer 7

That's because he expanded (x-3)^5, not (x+3)^5 lol.

Answer 8

Expand (2x – 2y)5.

32x5 – 80x4y + 160x3y2 – 160x2y3 + 80xy4 – 32y5

32x5 + 160x4y – 320x3y2 + 320x2y3 – 160xy4 + 32y5

32x5 + 80x4y – 160x3y2 + 160x2y3 – 80xy4 + 32y5

32x5 – 160x4y + 320x3y2 – 320x2y3 + 160xy4 – 32y5

Answer 9

do u know this one

Answer 10

its D

Answer 11

could you tellme how to do these because i have more

Answer 12

Expand (5 + z)4.

625 + 500z + 150z2 + 20z3 + z4

625 + 375z + 150z2 + 15z3 + z4

625 + 250z + 100z2 + 10z3 + z4

625 + 125z + 25z2 + 5z3 + z4

Answer 13

i dont know this one sorry :(

Answer 14

what grade is this for ?

Answer 15

How can you not know lol?

Answer 16

i got something that isn't one of the options so i don't want to give him the wrong info

Answer 17

im a junior

Answer 18

Well, you can simply the expression, then you would get one of the options.

Answer 19

can you use pascal's triangle ?

Answer 20

i mean are you allowed .... ?

Answer 21

i am a freshmen so i don't get all of these i get some but i never learned it in my class i see what my cousin does sometimes like how she does her work that's how i get this i learned some things from looking at her doing her work

Answer 22

i think im allowed to

Answer 23

alright ready ?

Answer 24

yea

Answer 25

\[\huge\rm (5+z)^4\]
what numbers are in 4th row
bec exponent is 4
so then 2nd number of row should be 4

Answer 26

wait i forgot
here is a triangle :P http://prntscr.com/77ig88

Answer 27

first term exponent start from 0 and decreases to 4(given exponent )
2nd term exponent start from (given exponent ) and end up with 0 exponent