Question

please answer all the circled questions please its so urgent and the 5. roman d. bit is not clear that question is (5/9)^-5÷(9/5)^7....​

Answer 1

Step-by-step explanation:

(d){ (-2/5)^-1 }^-2

= (-2/5)^-1 × -2

= (-2/5)^-2

= (-5/2)^2 (ans)

(e)(2/7)^-3 × [ (7/2)^2 ÷ (7/2)^5 ]

= (2/7)^-3 × [ (7/2)^2-5 ]

= (2/7)^-3 × [ (7/2)^-3 ]

= (2/7)^-3 × (2/7)^3

= (2/7)^-3 + 3

= (2/7)^0

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Answer 2

Step-by-step explanation:

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