Simplify:

(3cd^4)(-2c^2)(5cd^3)

A: 6c^4d^7
B: -30c^4d^7
C: 6c^2d^7
D: -30c^2d^7

I am completely clueless on what the answer would be, help appreciated
;-;

3 answers

how can you be "completely" clueless? Surely examples just like this one were worked out for you.

This relies on the fact that multiplication is commutative -- you can switch things around as you will.

(3cd^4)(-2c^2)(5cd^3)
= 3 c d^4 * -2 c^2 * 5 c d^3
= (3 * -2 * 5) * (c * c^2 * c) * (d^4 * d^3)
= -30 c^4 d^7
I think shes askin for answers, thats why :p
I can fo this quiz to find out the right and wrong answers for you, just give me a few minutes to do it ^^