rajeev dandu answered question 11/16/2011 What happens when we run out of crude oil? Nothing! We use bicycles instead!!!
rajeev dandu answered question 7/18/2011 If x-y=9, and x^2+y^2=99, what is xy? Show steps. (x-y)^2=81 x^2+ y^2 -2xy=81 2xy=x^2 + y^2 -81 xy=99-81 /2 xy =8/2 xy=4 is the answer...
