Okay.. it says on my assignment ..

"to solve an equation we sometimes have to change the subject"

first of all.. what is the subject?

thats the first question. and then the second question says.

"Given A = B ( (square root of) P+Q / P - Q ) where B > 0, make P the subject"

ARGH

I NEED HELP AND THIS ASSIGNMENT IS DUE SOON !

why does math have to be so confusing D: