Q. 225.0( 3 Votes )

If two zeros of x3 + x2 – 5x – 5 are √5 and –√5 , then its third zero is
A. 1

B. – 1

C. 2

D. – 2

Answer :

Given,


x3 + x2 – 5x – 5


Zeros = √5 and – √5


x2 – 5 is a root



(x2 – 5)(x + 1) = 0


x = – 1


So,


The third zero is – 1

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.