Question

Multiply the expressions, and simplify. (-10x^-5 y^-2) · (-9x^-4y)

Answer 1

Is this the question?
\[(-10x ^{-5}y ^{-2})(-9^{-4y})\]

Answer 2

Almost the last part is -9x^-4y Just forgot the x after 9.. The answer I got was
90x-9y-1. wasn't sure if that is correct???

Answer 3

90x^-9y^-1.. is what I ment

Answer 4

Do you know the answer to this similar question?
a*y^5*b*y^11

Answer 5

The answer to my posting above is a*b*y^(5+11)=a*b*y^16

Answer 6

Multiplying out your question gives:
90*x^(-5-4y)*y^-2
Which ca be rewritten as follows:
\[(90x ^{-5})\div(x ^{4y}y ^{2})\]