(6-2xy)(2-6xy)=4(3-xy)(1-3xy)
问题描述:
(6-2xy)(2-6xy)=4(3-xy)(1-3xy)
如题,(6-2xy)(2-6xy)怎样化到4(3-xy)(1-3xy)?
答
(6-2xy)(2-6xy)
=[2(3-xy)][2(1-3xy)]
=2*2(3-xy)(1-3xy)
=4(3-xy)(1-3xy)