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多项式3xy2-1-x2y3-x3按x的升幂排列为
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关于多项式0.3x2y﹣2x3y2﹣7xy3+1下列说法错误的是
这个多项式是五次四项式
四次项的系数是7
常数项是1
按y降幂排列为﹣7xy
3
﹣2x
3
y
2
+0.3x
2
y+1
关于多项式0.3x2y﹣2x3y2﹣7xy3+1下列说法错误的是
这个多项式是五次四项式
四次项的系数是7
常数项是1
按y降幂排列为﹣7xy
3
﹣2x
3
y
2
+0.3x
2
y+1
一个多项式加上则这个多项式是
）x
3
+3xy
2
（
）x
3
-3xy
2
（
）x
3
-6x
2
y+3xy
2
（
）x
3
-6x
2
y-3x
2
y
一个多项式加上x2y-3xy2得2x2y-xy2则这个多项式是
3x
2
y-4xy
2
；
x
2
y-4xy
2
；
x
2
y+2xy
2
；
-x
2
y-2xy
2
多项式1﹣2x4y﹣3x3y2﹣y4+x2y3按y的降幂排列为__________.
多项式x5y2＋2x4y3－3x2y2－4xy是
按x的升幂排列
按y的升幂排列
按x的降幂排列
按y的降幂排列
多项式x5y2+2x4y3﹣3x2y2﹣4xy是
按x的升幂排列
按x的降幂排列
按y的升幂排列
按y的降幂排列
多项式3x3y﹣y4+5xy2﹣x4按x的升幂排列为．
把多项式x³y-x²y³-1-xy²按x的升幂排列为
多项式x5y2+2x4y3﹣3x2y2﹣4xy是
按x的升幂排列
按x的降幂排列
按y的升幂排列
按y的降幂排列
多项式2x4y-x2y3+x3y2+xy4-1按x的降幂排列为______按y的升幂排列为___
将多项式2xy2﹣3x2+5x3y3﹣6y按y的升幂排列.
一个多项式加上则这个多项式是
x
3
-6x
2
y-3x
2
y
x
3
-3xy
2
x
3
-6x
2
y+3xy
2
x
3
+3xy
2
已知多项式x4-y+3xy-2xy2-5x3y3-1按要求解答下列问题1指出该多项式的项2该多项式的
多项式x4y2－7xy+6x+3x5y3按x的降幂排列为按x的升幂排列为______________
一个多项式
与多项式
＝2x
2
－3xy－y
2
的和是多项式
＝x
2
＋xy＋y
2
，则A.等于( ) A. x
2
－4xy－2y
2
B. －x
2
＋4xy＋2y
2
C. 3x
2
－2xy－2y
2
3x
2
－2xy
把多项式4x3y3﹣xy﹣2x4﹣8按字母x的降幂排列.
把多项式x4y+2x2y3-5xy4+6-3x3y2按x的升幂排列是________________
把多项式﹣1+2nx2－x+x3y按x的降幂排列为:
把多项式x3y-xy2+-x2y3先按x的升幂排列再按y的降幂排列.
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