Question

if a,b are the zeros of polynomial 2y^2+7y+5. write the value of a+b+ab

Answer 1

here,

A=2, B=7, C=5

so,

a+b
=-B/A
=-7/2

and,

ab
=C/A
=5/2

so,

a+b+ab
=-7/2+5/2
=-2/2
=-1

Answer 2

2 y^2 + 7y + 5
a+b = - 7/2
ab = 5/2
Answer = -1