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Question
Find the square of `"5a"/"6b"-"6b"/"5a"`
Sum
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Solution
`("5a"/"6b"-"6b"/"5a")^2`
= `("5a"/"6b")^2+("6b"/"5a")^2-2xx"5a"/"6b"xx"6b"/"5a"`
`="25a"^2/"36b"^2-2+"36b"^2/"25a"^2`
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Important Formula of Expansion
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