计算﹙5-2y﹚﹙4y²+25+10y﹚
问题描述:
计算﹙5-2y﹚﹙4y²+25+10y﹚
答
﹙5-2y﹚﹙4y²+25+10y﹚
=20y²+125+50y-8y³-50y-20y²
=-8y³+125