Question

using sutaible identies evaluate (99)²​

Answer 1

Answer:

99^2 = 9801

hope, it would help you (◍•ᴗ•◍)

Answer 2

Answer:

(99)² can be written as (100-1)².

Here, (100-1)² is in the form (a-b)²=a²+b²-2×a×b.

Thus,  (100-1)²=100²+1²-2×100×1

⇒10000+1-200

⇒9800+1

⇒9801.

HOPE THIS HELPS :D