Q. 123.5( 4 Votes )

Evaluate the foll

Answer :



Since the form is



Method 1: factorization



Since a3 + b3 = (a + b)(a2 + b2-ab) & a2-b2 = (a + b)(a-b)









Method 2: By L hospital rule:


Differentiating numerator and denominator separately:







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