Sole the following question...
 

Asked by nitishkrnehu09 | 18th Nov, 2017, 09:58: PM

Expert Answer:

begin mathsize 16px style straight x to the power of 2 straight n plus 1 end exponent minus open parentheses 2 straight n plus 1 close parentheses straight x plus straight a equals 0
puting space values space of space limit
straight x equals negative 1 space & space straight n space is space natural space no.
we space get
straight n equals straight a over 2..... straight a equals 2 comma 4 comma 6 comma......
at space straight x equals 1
straight n equals fraction numerator negative straight a over denominator 2 end fraction..... straight a equals negative 2 comma negative 4 comma negative 6 comma......
so space at space straight n equals 1..... straight a equals 2 space or space straight a equals negative 2 space respectively space
we space will space have space cubic space equation space
and space cubic space equation space will space have space 3 space roots
so space for space every space value space of space straight a space we space will space have space atleast space 3 space roots. end style

Answered by Arun | 1st Dec, 2017, 05:40: PM