Question

okay, so this is probably a stupid question, but im just not sure..

i think its A, but am i right? what confuses me is the other choices are very different and i just dont know.

What is the prime factorization of 72?


A. 8*9




B. 2^3*3^2




C. 2^3*9




D. 2^4*3^3

Answer 1

Make a tree and break down the numbers into their respective factors like so:

Answer 2

okay so im right?

Answer 3

no, that's why I drew the lines below the 8 and 9
they can both be factored further

Answer 4

ooohhhhhhhhh so its D. 8 = 2^4 and 9 =3^3

Answer 5

oh

Answer 6

2^4 is 16 :p

Answer 7

im so confused

Answer 8

How many 2s are in my drawing and how many 3s?

Answer 9

ohhhhhhhhhhhhhhhhhhhhh

Answer 10

You're supposed to factor the numbers until you have prime numbers.

like 2,3, 5, 7 etc.

Then you rewrite the number as a product.

2*2*2*3*3*3*3

Answer 11

3*3*2*2*2
3*3=3^2
2*2*2=2^3
Notice?
So yes exactly what @bibby said.

Answer 12

okay, i get it. haha thank you, both.