What is the problem in the first step they had done factorisation very easy sum
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Kabir Chhabra answered this
I want any other method not this method. If i had to use this method then why i had posted it if u dont know then dont try let experts do
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Mohamed Tahirsha answered this
you could also solve it by L-hospital's rule
in case you don't know about it, it is a rule which is applied when limit is in 0/0 form
and in this rule you differentiate the numerator and denominator separately and then put the value of x