Answer:
3,999,996.
Explanation:
We can use the distributive property of multiplication to expand 1998 x 2002 as follows:
1998 x 2002 = (2000 - 2) x (2000 + 2)
Using the FOIL method, we can expand the product of these two binomials:
(2000 - 2) x (2000 + 2) = 2000 x 2000 + 2 x 2000 - 2 x 2000 - 2 x 2
Simplifying the terms, we get:
2000 x 2000 - 4 = 3,999,996
Therefore, 1998 x 2002 is equal to 3,999,996.