Math, asked by dhanukaayana, 22 days ago

(2x-1/x) by using second indentity.​

Answers

Answered by thunderemperordelhi
1

Answer:

4x² + 1/x² – 4

Step-by-step explanation:

By using identity: (a – b)² = a² + b² – 2ab :  

(2x - 1/x)² = (2x)² + (1/x)² – 2 (2x)(1/x)

= 4x² + 1/x² – 4

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