Discover Questions

Solve (D2-4D+4)y=x2+ex? Find difference between the largest 4 digit number and the smallest 6 digit number? What is the difference between the region of normal dispersion, and that of anomalous dispersion? Command agriculture? If in the equation x/y - y/x is equal to 4, then how much does the equation x^2/y^2 - y^2/x^2 equal to? please help.?