By which process I can solve this value : (82)^2 - (18)^2

Asked by sangita | 31st May, 2017, 01:18: PM

Expert Answer:

begin mathsize 14px style By space using space the space identity space
straight a squared minus straight b squared equals left parenthesis straight a minus straight b right parenthesis left parenthesis straight a plus straight b right parenthesis

left parenthesis 82 right parenthesis squared minus left parenthesis 18 right parenthesis squared equals left parenthesis 82 minus 18 right parenthesis left parenthesis 82 plus 18 right parenthesis equals 64 cross times 100 equals 6400 end style

Answered by Rashmi Khot | 31st May, 2017, 02:46: PM