Question

. Find the following:
(i) (41)
(ii) (98)2 (Using (a + b)2 = a + 2ab + b2 and
(a - b)2 = a? - 2ab + b2​

Answer 1

Answer:

41 square can be written as (40 + 1) square

which can be written as

40 square + 1 square + 2 . 40 .1

1600 + 1 + 80

1681

For 98 use (100 - 2) square

which gives 100 square + 2 square - 2 . 100 . 1

9604