一个因数是4,另一个因数是5,积是多少?5C(C:s:]-P*O6v)x.E
算式:提示4{(z;U:f+Q/Q8B'\,F5C(C:s:]-P*O6v)x.E
答:积是-i)e+d+i6T6C-p(R6T7W:V。5C(C:s:]-P*O6v)x.E