Answer:
x•y=20
x+y=9
y=9-x
x(9-x)=20
9x-x^2=20
-x^2+9x-20 =0
It says that the first integer times the second equals 20.
x times y = 20 or x•y=20.
x plus y is 9. x+y=9.
Solve to find one of the integers.
You subtract x from both sides, you get y=9-x.
You know what y is, you can plug that in for x•y=20.