## 29 December 2005## Google algebra?This Google query came in this morning:
How old is this person? In two years she'll be twice as old as she was five years ago.
I know Google can do arithmetic, but I wasn't aware that they could solve equations for By the way, she's twelve. Posted at 8:10 AM to PEBKACTwelve? Posted by: McGehee at 9:37 AM on 29 December 2005Oops -- I solved before I saw the last line of the post. Posted by: McGehee at 9:38 AM on 29 December 2005x+2 = 2(x-5) x+2 = 2x-10 add 10 and subtract x from both sides: x+2+10-x = 2x-10+10-x 12 = x In case future Googlers wonder how McGeehee knew :) Posted by: Matt at 12:38 PM on 29 December 2005Which will be incorporated into a future Google enhancement called "ShowYourWork." |