Question

Find the sum and product of roots for the given polynomial 2x2+x-5 ​

Answer 1

Answer:

$p(x) = 2{x}^{2} + x - 5 \\ sum \: of \: zeroes \: = \frac{ - b}{a} \\ \: \: \: \: \: \: \: \: \frac{ - 1}{2} \\ and \: product \: of \: zeroes \: = \frac{c}{a} \: \\ \: \: \: \: \: \: \: = \frac{ - 5}{2}$

Answer 2

Answer:

sum =-b/a

-b/a =-1/2

so,-b=-1 .....b=1 and a =2

product =c/a

c/a=-5/2

a=2

b=1

c=-5

hope it helps you