中学生网络课堂本课配套习题挑战模式1/5
对于多项式22m2+3m-1，下列说法正确的是（ ）
| A: 它是关于m的四次三项式 |
| B: 它的常数项是1 |
| C: 它是按m的降幂排列 |
| D: 它是按m的升幂排列 |
- 提示1：PHA+5aSa6aG55byP55qE5qyh5pWw55qE5qaC5b+1OuKAnOWkmumhueW8j+S4reasoeaVsOacgOmrmOeahOmhueeahOasoeaVsOKAnTxicj48L3A+
- 提示2：PHA+5aSa6aG55byP55qE6aG55pWw55qE5qaC5b+1PC9wPg==
- 提示3：PHA+5aSa6aG55byP5Y2H6ZmN5bmC5o6S5YiX5pa55rOVPC9wPg==
- 答案：Qw==
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
本课配套习题挑战模式2/5
将多项式5x3y-y4+2xy2-x4按x的降幂排列是（ ）
| A: -x4+5x3y+2xy2-y4 |
| B: -y4+5x3y+2xy2-y4 |
| C: -x4+5x3y-y4+2xy2 |
| D: 2xy2+5x3y-y4-x4 |
- 提示1：PHA+6YCJ5a2X5q+N77ya5oyJeOaOkuW6jzxicj48L3A+
- 提示2：PHA+5a6a5Y2H6ZmN77ya6ZmN5bmCPGJyPjwvcD4=
- 提示3：PHA+5o6S5bqP77ya5piv5ZCm5LuO5aSn5Yiw5bCP77yM5oiW5LuO5bCP5Yiw5aSnPC9wPg==
- 答案：QQ==
PGRpdj7op6PvvJror6XlpJrpobnlvI/kuK1455qE5bmC5L6d5qyh5pivM++8jDDvvIwx77yMNO+8jOaMiemZjeW5guaOkuWIl+aXtuW5guS+neasoeaYrzTvvIwz77yMMe+8jDDvvI48YnI+5aSa6aG55byPNXg8c3VwPjM8L3N1cD55LXk8c3VwPjQ8L3N1cD4rMnh5PHN1cD4yPC9zdXA+LXg8c3VwPjQ8L3N1cD7mjInlrZfmr4146ZmN5bmC5o6S5YiX5Li6LXg8c3VwPjQ8L3N1cD4rNXg8c3VwPjM8L3N1cD55KzJ4eTxzdXA+Mjwvc3VwPi15PHN1cD40PC9zdXA+77yOPGJyPuaVhemAiUHvvI48L2Rpdj4=
本课配套习题挑战模式3/5
多项式2x3y-3xy4-x2y+7按字母x降幂排列正确的是（ ）
| A: -3xy4+2x3y-x2y+7 |
| B: 7-x2y+2x3y-3xy4 |
| C: 2x3y-x2y-3xy4+7 |
| D: 7-3xy4-x2y+2x3y |
- 提示1：PHA+6YCJ5a2X5q+N77ya5oyJeOaOkuW6jzwvcD4=
- 提示2：PHA+5a6a5Y2H6ZmN77ya6ZmN5bmCPC9wPg==
- 提示3：PHA+5o6S5bqP77ya5piv5ZCm5LuO5aSn5Yiw5bCP77yM5oiW5LuO5bCP5Yiw5aSnPC9wPg==
- 答案：Qw==
PGRpdj7op6PvvJror6XlpJrpobnlvI/kuK1455qE5bmC5L6d5qyh5pivM++8jDLvvIwx77yMMO+8jOaMiemZjeW5guaOkuWIl+aXtuW5guS+neasoeaYrzPvvIwy77yMMe+8jDDvvI48YnI+5aSa6aG55byPMng8c3VwPjM8L3N1cD55LTN4eTxzdXA+NDwvc3VwPi14PHN1cD4yPC9zdXA+eSs35oyJ5a2X5q+NeOmZjeW5guaOkuWIl+S4ujJ4PHN1cD4zPC9zdXA+eS14PHN1cD4yPC9zdXA+eS0zeHk8c3VwPjQ8L3N1cD4rN++8jjxicj7mlYXpgIlD77yOPC9kaXY+
本课配套习题挑战模式4/5
下列多项式中，按字母x的降幂排列，并且一次项系数为-1的二次三项式是（ ）
| A: x3-x-1 |
| B: -x2-x+1 |
| C: 1-x+x2 |
| D: x2-2x-1 |
- 提示1：PHA+5qC55o2u5aSa6aG55byP5qyh5pWw55qE5a6a5LmJ5rGC6KejPC9wPg==
- 提示2：PHA+5oyJeOeahOmZjeW5guaOkuWIlzxicj48L3A+
- 提示3：PHA+5rOo5oSP77ya5LiA5qyh6aG557O75pWw55qE56ym5Y+3PGJyPjwvcD4=
- 答案：Qg==
PGRpdj7op6PvvJpB44CB5piv5LiJ5qyh5byP77yM5pWF6YCJ6aG56ZSZ6K+v77ybPGJyPkLjgIHmraPnoa7vvJs8YnI+Q+OAgeaYr+aMieWtl+avjXjnmoTljYfluYLmjpLliJfvvIzmlYXpgInpobnplJnor6/vvJs8YnI+ROOAgeS4gOasoemhueezu+aVsOS4ui0y77yM5pWF6YCJ6aG56ZSZ6K+v77yOPGJyPuaVhemAiULvvI48L2Rpdj4=
本课配套习题挑战模式5/5
把多项式3x2+5-2x3-4x按x降幂排列，它的第三项是（ ）
| A: 2x3 |
| B: -2x3 |
| C: 4x |
| D: -4x |
- 提示1：PHA+5qC55o2u5aSa6aG55byP5qyh5pWw55qE5a6a5LmJ5rGC6KejPC9wPg==
- 提示2：PHA+5L6d5o2ueOeahOmZjeW5guaOkuWIlzwvcD4=
- 提示3：PHA+5rOo5oSP77ya5ZCE6aG557O75pWw56ym5Y+3PGJyPjwvcD4=
- 答案：RA==
PGRpdj7op6PvvJrlpJrpobnlvI8zeDxzdXA+Mjwvc3VwPis1LTJ4PHN1cD4zPC9zdXA+LTR455qE5ZCE6aG55Li6M3g8c3VwPjI8L3N1cD7vvIw177yMLTJ4PHN1cD4zPC9zdXA+77yMLTR477yMPGJyPuaMiXjnmoTpmY3luYLmjpLliJfkuLotMng8c3VwPjM8L3N1cD55KzN4PHN1cD4yPC9zdXA+LTR4KzXvvI48YnI+5YiZ5a6D55qE56ys5LiJ6aG55Li6LTR477yOPGJyPuaVhemAiUTvvI48L2Rpdj4=
