Question

please do this last sum

Answer 1

Hope this helps! Please mark as brainliest!

Answer 2

see you should use bodmas rule here so division comes first

lets takes the second part and solve it first

we know that if bases are same then we have to minus powers

so 2/5 ^ 3-7 that is 2/5^-4

now to the first part 2/5^3*2/5^-4

we know that if bases are same then we have to add powers

2/5^3+(-4)

2/5^-1 or -2/5

pls ask me any question if u have doubts from my answer

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