9514 1404 393
Answer:
-4u^2/y+(5/2)y^3u^2
Step-by-step explanation:
The applicable rules of exponents are ...
(a^b)(a^c) = a^(b+c)
(a^b)/(a^c) = a^(b-c)
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it is the second one, number zero does not have an opposite
4 miles
3/4 divided by 3= 1/4
3/3 = 1
1x4=4