If 9876^2=97,535,376
Find the value of 9877^2 and (9874)(9878) without using a calculator
(9874)(9878) = (9876-2)(9876+2) = 9876^2 - 2^2
9877^2 = (9876+1)^2 = ...
Find the value of 9877^2 and (9874)(9878) without using a calculator
9877^2 = (9876+1)^2 = ...