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Question
Expand the following:
`(2"a" + 1/(2"a"))^2`
Sum
Solution
`(2"a" + 1/(2"a"))^2`
= `(2"a")^2 + 2(2"a") (1/(2"a")) + 2"a"^2`
= `4"a"^2 + 2 + (1)/(4"a"^2)`.
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