Answer:

Step-by-step explanation:
if we call the fist of the numbers
, then the following number is
.
the product of this two numbers according to the problem is:

which results in:

The standar form of a quadratic equation is

so we must make the equation equal to zero:

and this way we can see that the constant
in the quadratic expression is
.
if you want the values of the consecutive numbers, they are 20 and 21.