Question

One of the factors of...

Answer 1

\[a^3(b-c)^3+b^3(c-a)^3+c^3(a-b)^3 \]

Answer 2

A) a+b+c B) a-b-c
C) ab+bc+ca D) a-b

Answer 3

so how does that help moneybird (koala bied :P )

Answer 4

wow i still cant figure it out lemme take a pen and paper now

Answer 5

Expanded form
-3 a^3 b^2 c+3 a^2 b^3 c+3 a^3 b c^2-3 a b^3 c^2-3 a^2 b c^3+3 a b^2 c^3

pretty sure -3abc is a factor

Answer 6

But from the options which is a factor ?

Answer 7

its either A or C lemme see which of these now

Answer 8

-3 a^3 b^2 c+3 a^2 b^3 c+3 a^3 b c^2-3 a b^3 c^2-3 a^2 b c^3+3 a b^2 c^3
= -3abc (a-b)(a-c)(b-c)

Answer 9

Answer is D

Answer 10

According to answer key it's D

Answer 11

Can you explain it ?

Answer 12

kewl :D lolz i need to use my head now :P well done moneybird.. but how io.O

Answer 13

I just expanded and collect like terms and factor them

Answer 14

Oh, Ok thanks

Answer 15

lol i wish i could give u medal twice :D for ur perseverance hehe

Answer 16

LOL We shouldn't help others for medals

Answer 17

of course i dont do it for that.. it just a way o acknowledging you and praising you hehe

Answer 18

Thanks hehe