Question

explain step by step​

Answer 1

Answer:

4^-2 x 7^-6 x x^6 x y^-3

(28)^-4 x x^-3 y^6

up - 28^-8 x x^6 x y^-3

28x^-2 x y^-3

28xy^-5

down - 28xy^-1

answer is 28xy^-5 up

28xy^-1 down

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Answer 2

Answer:

16/49×(x/y)^9

Step-by-step explanation:

4^-2=2^-4

(2^-4)(7^-4)=14^-4

i•e (14/28)^-4=2^4=16

16×7^-2(x/y)^9

#16/49(x/y)^9