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Question
Find the square of `3"x"+2/"y"`
Sum
Solution
`3"x"+2/"y"`
`(3"x"+2/"y")^2=(3"x")^2+(2/"y")^2+2(3"x")(2/"y")`
`=9"x"^2+4/"y"^2+"12x"/"y"`
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Important Formula of Expansion
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