Math, asked by pankajsharma74903, 8 months ago

solve this sum by using grouping method

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Answered by arjun5424

1

Step-by-step explanation:

a2+1/a2-2 -3a+3/a

since (a-b)2= a2+b2-2ab

so, a2+1/a2-2 = (a-1/a)2

=> (a-1/a)2 -3(a-1/a)

=> (a-1/a-3)(a-1/a)---------ANS

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