Question

多项式-8m²n³+10m³n²+2m²n²被-2m²n²除，所得的商为

1. A.
   4n+5m-1
2. B.
   4n-5m+1
3. C.
   4n-5m-1
4. D.
   4n+5m

Answer 1

C
分析：被除数提取公因式后除以除数，约分即可得到商．
解答：根据题意列得：（-8m²n³+10m³n²+2m²n²）÷（-2m²n²）=2m²n²（-4n+5m+1）÷（-2m²n²）=4n-5m-1．
故选C
点评：此题考查了因式分解的应用，比较简单，是一道基本题型．