49^7/2 - 49^5/2
_____________
49^3/2
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Answer:
As 49 can be written as 7^2
therefore
(7^2)^3/2 - ((7^2)^5/2) ÷ 7^2
7^3-7^5/7^2
7^3 - 7^(5-2)
7^3 - 7^3
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