simplify (-4)4 the second 4 is the exonent

-4^4 = http://www.google.com/#hl=en&sugexp=ldymls&pq=cpt-4%20codes&xhr=t&q=-4%5E4&cp=4&pf=p&sclient=psy&source=hp&aq=f&aqi=&aql=&oq=-4%5E4&pbx=1&bav=on.2,or.r_gc.r_pw.&fp=cc6bcc5982231d65