Question

4. Without using a calculator, evaluate each of the
following
(a) 12032
(b) 892
(C) 1998 x 2002​

Answer 1

Answer:

Hey mate! Your first and second questions are incomplete, but here's your third answer:

1998 * 2002 = 3999996.

Step-by-step explanation:

1998 * 2002

1998 = 2000 - 2, 2002 = 2000 + 2.

By (a + b)(a - b) = a² - b², where a = 2000 and b = 2,

2000² - 2²

4000000 - 4

3999996.

So 1998 * 2002 = 3999996.

HOPE IT HELPS, PLS MARK IT AS THE BRAINLIEST AND PLS FOLLOW ME! :):):)

Answer 2

Step-by-step explanation:

c) (2000-2)(2000+2)

2000^2 - 2^2

4000000-4

3999996

what do we have to do in the first two parts?