Question

please answer this question ​

Answer 1

15)p(x)=x²-x-2

To get zeroes we should consider p(x)=0

x²-x-2=0

x²-2x+x-2=0

x(x-2)+1(x-2)=0

(x-2)(x+1)=0

x=2 or x=-1

16)2x/9,x/4,x/3,x/2,x

(n+1/2)th term

(5+1/2)th term

6/2=3rd term

x/4=3

x=3×4

x=12