Question

Which of the following is the expansion of (x + 3)5

Answer 1

Can we have the following?

Answer 2

x5 + 5x4 + 10x3 + 10x2 + 5x + 1

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

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

None of the above

Answer 3

would it be 5x+15
x=3

Answer 4

My goodness. That's a lot of numbers. Just a second.

Answer 5

sorry, thats why im confused...

Answer 6

This is what WA says.

https://www4c.wolframalpha.com/Calculate/MSP/MSP98971a49h7fi3b93f8920000226cf90c0ee1fdhc?MSPStoreType=image/gif&s=55&w=317&h=35

Answer 7

so none?

Answer 8

That's my guess, but you might need an expert opinion. Just a second.

Answer 9

@saifoo.khan

Answer 10

?

Answer 11

just a second, I'm trying to get someone to help you with this one.

Answer 12

oh okay sorry, im new here :/

Answer 13

Why am I here? @poopsiedoodle

Answer 14

To help this guy out with this question.

Answer 15

Use that expansion formula!

Answer 16

@alexthedummy : Do you know the expansion formula?

Answer 17

for pascal's triangle? no

Answer 18

Nop.
Written under second line: http://www.a-levelmathstutor.com/images/algebra/binom-prob02.jpg

Answer 19

ok so how would i use that?

Answer 20

By which method did your teacher teach you?