=x3﹣x2+px2﹣px+2x﹣2
=x3+(﹣1+p)x2+(﹣p+2)x﹣2,
∵结果中不含x2项,
∴﹣1+p=0,
解得:p=1,
故p2017的值是1.
【调节情绪】
俗语“笑一笑,十年少;愁一愁,白了头。”说明了哪些道理?
若20-13xy=-27,则x+y=____ .
______ birds use their feathers for flight, some of their feathers are for other purposes.