Seems to be a lot of log help going on tonight.. here's one that im not sure where to start..

also,

Now on this on i figured out that i need to convert to exponential form this gives me:

then i multiply out:

rearrange:

now i figure punch it into the quadratic formula and call it a day? the program i'm putting it into for HW says it's only 1/2 right if i put in and yes i tried since it is +/-... ideas?

oh and by the way, how do i put square root symbols in these messages?