Problema Solution
the sum of two integers is 21.their product is 108.find the numbers.
Answer provided by our tutors
let numbers are x and y.
then,
x+y=21
xy=108
x(21-x)= 108
21x -x^2 = 108
x^2 -21x +108= 0
(x-9)(x-12)=0
x=9 then y=12
x=12 then y=9
so, numbers are 9,12