E v a l u a t e   lim x 2 x 9 - 3 x 8 + x 6 - 9 x 4 - 4 x 2 - 16 x + 84 x 5 - 3 x 4 - 4 x + 12

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What is the problem in the first step they had done factorisation very easy sum
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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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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
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What are you looking for?