Question 252122
x^2-11x+c = 0 let a,b be the roots of this equation.

sum of the roots is (a+b)=11
product of the roots ab = c

now given (a-b)=3

(a-b)^2=(a+b)^2-4ab

->  9 = 121-4c
=>  4c = 112
=>  c=28

ans. c=28