Question

Find the values of a and b if m and n are the zeros of the polynomial ax2-7x+b such that m+n=mn=21.

Answer 1

See the attachment for detail solution
Hope it will help you

Answer 2

Answer:

$\mathcal{\pink{answer = a = \frac{1}{3}, b = 7}}$

Step-by-step explanation:

Sum of Zeroes =m+n =-b/a= m+n=mn =21

So,

=》 -b/a= 7/a ;

=》 21=7/a

=》 a=7/21

=》a=1/3

Product of zeros= mn = c/a

So,

=》 b =21a

=》b=21×1/3

=》b= 7