Question

64m^3x-8n^3x=

Answer 1

(64 m^3 - 8 n^3) x

Answer 2

what does the question ask? are there words?

Answer 3

no

Answer 4

(4m-2n)(14m^2+8mn+4n^2)

Answer 5

thats what i put on my home work she gave me this answer and said wk it out 8x(2m-n)(4m^2+2mn+n^2)

Answer 6

you are supposed to factor maybe?

Answer 7

yes that's another form you can get by factoring...

Answer 8

so either way is right she counted it wrong

Answer 9

ok perhaps it says
\[64m^3x-8n^3x\]

Answer 10

in that case you have a common factor of 8 and x to pull out to write
\[8x(8m^3-n^3)\]

Answer 11

yeah..either way its right unless she was looking for specific factor form...if the directions says so.

Answer 12

then the stuff inside the parentheses is the differnece of two cubes, and you factor as
\[8x(2m-n)((2m)^2+2mn+n^2)\]

Answer 13

and then write
\[8x(2m-n)(4m^2+2mn+n^2)\]

Answer 14

i am using the fact that
\[a^3-b^3=(a-b)(a^2+ab+b^2)\] with
\[a=2m,b=n\]

Answer 15

and that is the "final answer' as they say

Answer 16

thanks






i will try that way

Answer 17

yw