(﹣2x²y)³+(8x²)²×(-x)²×(-y)³ 怎么计算?
问题描述:
(﹣2x²y)³+(8x²)²×(-x)²×(-y)³ 怎么计算?
答
原式=-8x(的6次方)y³+64x(的4次方) ×x²× (-y³ )=-8x(的6次方)y³+64x(的6次方)× (-y³ )=-8x(的6次方)y³-64x(的6次方)y³ =-72x(的6次方)y³上标实在...