Question

If 2 and 1/2 are the zeros of pr+5r+r, then (a) p=r=2
(b) p=r= - 2
(c) p =2, r= -2
(d) p = -2 ,r= 2​


(please give answer with explanation)

Answer 1

Answer:

option b

Step-by-step explanation:

if zeroes are reciprocal to each other , p = r

if we substitute given zeroes in the place of x , we can find the value

p(2)^2 + 5(2) + r = 0

4p + 10 + p = 0 ( r = p )

5p = -10

p = -10/5 = -2