题目内容
计算:
(y5-y4+y3)÷y3.
4y2-3y+2
y2·y4·y5
(1)(y5)4×[-(y4)2]×(y3)3×(-y2)
(2)2(x3)4+x4(x4)2+x5×x7+x6(x3)2