中一數學..

Can you please clarify what your question is?Since there is no instruction to continue, I can't draw any solution.Thanks!

2007-11-02 22:48:09 補充：
If your question is expand (2x+8y)(6n+5m)Then (2x+8y)(6n+5m)=12nx+10mx+48ny+40my

(2x+8y)(6n+5m)

=2x(6n+5m)+8y(6n+5m)

=12xn+10xm+48yn+40ym

12nx+10mx+48ny+40my

(2x+8y)(6n+5m)
=2x(6n+5m)+8y(6n+5m)
=12xn+10xm+48yn+40ym
=2(6xn+5xm+24yn+20ym)

(2x+8y)(6n+5m)
=(2x+8y)6n+(2x+8y)5m
=12xn+48yn+10xm+40ym
=10mx+12nx+40my+48ny

(2x+8y)(6n+5m)
=2x(6n+5m)+8y(6n+5m)
=12nx+10mx+48ny+40my

(2x+8y)(6n+5m)

=12nx+48ny+10mx+40my //

(2x+8y)(6n+5m)
=12nx+10mx+48ny+40my

(2x+8y)(6n+5m)
=2x(6n+5m)+8y(6n+5m)
=12xn+10xm+48yn+40ym

沒有公式只可以做計算
( 2x+8y)(6n+5m)
=12xn+10xm+48yn+40my
(注意正負號)