Problema Solution
one integer is 9 more than another. Their product is 112. find the integers
Answer provided by our tutors
let the two integer be x and y
x= 9+y
x*y =112
(9+y)y =112
9y +y2 -112=0
y2 +9y -112=0
(y+ 16)(y-7)=0
y=-16 or y=7
y=-16 (ignored)
y=7
x=7+9 = 16