Question

I am having trouble I started math correspondance and I need a little help here is my first question
(8xyto the power of 3)(7y to the power of -4)

Answer 1

and...?

Answer 2

I do not understand how to do this kind of math

Answer 3

that is simply an expression, what do you want to do with it?

Answer 4

I have to simplify the expressions

Answer 5

you'll need a couple definitions:
(a^b)(a^c) = a^(b + c)
a^(-b) = 1/(a^b)
a^(0) = 1