Expand : (2"X"-1/(2"X"))^2 - Mathematics

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Sum

Expand : `(2"x"-1/(2"x"))^2`

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Solution

`(2"x"-1/(2"x"))^2=(2"x")^2+(1/(2"x"))^2-2xx2"x"xx1/(2"x")`

`=4"x"^2+1/(4"x"^2)-2`

Concept: Important Formula of Expansion
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APPEARS IN

Selina Concise Mathematics Class 8 ICSE
Chapter 12 Identities
Exercise 12 (B) | Q 1.8 | Page 152
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