Simplify The Following, Giving Your Answer In Positive Exponent Only., (Xy\Xb3)(2x\Xb2y-\Xb3) , (2m^-4)(-3m^9)

Simplify the following, giving your answer in positive exponent only.

(xy³)(2x²y-³)
(2m^-4)(-3m^9)

 

Answer and Step-by-step explanation is in the photo:


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