<div id="msgcns!630E02BCA26E400!611" class="bvMsg"><div>A = A * (B + C * B)</div> <div> </div> <div><assign> -> <id> = <expr></div> <div><id> -> A B C</div> <div><expr> -> <expr> + <term> <term></div> <div><term> -> <term> * <factor> <factor></div> <div><factor> -> (<expr>) <id></div> <div> </div> <div>Paring Tree as below :</div> <div><a href="http://pic.pimg.tw/wc0731/9df1385c3b0c87fd61ec5595eab2e15b.jpg?v=1295445002" target="_blank" rel="WLPP;url=http://pic.pimg.tw/wc0731/9df1385c3b0c87fd61ec5595eab2e15b.jpg?v=1295445002"><img alt="" src="http://pic.pimg.tw/wc0731/9df1385c3b0c87fd61ec5595eab2e15b.jpg?v=1295445002" /></a></div></div>