Question

evaluate 992^2 - 1 by using suitable identity.​

Answer 1

Answer:

999935

Step-by-step explanation:

992^2 = (1000-8)^2 -1 ________(a-b)^2=a^2+b^2-2ab where a=1000 and b=64

1000^2+8^2-2(1000)(8) - 1

1000000+64-16000 - 1

984064 - 1

984063

hope u like the answer