19×1001-19
=19×﹙1001-1﹚
=19×1000
=19000.
猜你喜欢
- 1造成贺兰山地两侧带谱差异的主要原因是什么
- 2老师,请解释几个概念
- 3重新排列句子,
- 4直线3x+4y+m=0与圆x^2+(y-5/2)^2=25/4交于两点A、B,且OA⊥OB 求m的值
- 5递等式计算:71又1/6+61又1/5×5/6+51又1/4×4/5+41又1/3×3/4+31又1/2×2/3
- 6At the scintillating game against the New England Patriots yesterday,Jeremy Kerley (188 lbs mass) caught a touchdown pas
- 7中国》课后的第4题怎么写,至少两片
- 8If you have any problems,you can ----- Mr green ------advice.
- 9已知函数f(x)=3x+2,数列{an}满足:a1≠-1且an+1=f(an)(n∈N*),若数列{an+c}是等比数列,则常数c=_.
- 10二次函数y=x的二次方+2的图像的顶点坐标是