can someone help me with this:48x^2y + 20xz +12xy + 5z

This subject is MATH, not 'groupie'!!

HOW MANY SQUARE FEET IN AN HALF AN AKER

Wendy: ACRE> http://www.onelook.com/?w=acre&ls=a

and there are 9 square feed in a square yard.

i am in 6 grade it is really hard. i struggle a lot in math we are learning metric units of mass but to get to the point my question is 200grams=_mg and stuff like that i need some one to brake down the steps and work with me to under stand what to do how to figure it out so it would be sooooo much help if u would please write back thankx!