單項(xiàng)式的系數(shù)是________，次數(shù)是________；多項(xiàng)式3xy－x＋2y－2有________項(xiàng)，次數(shù)是________．

由幾個(gè)單項(xiàng)式相________組成的代數(shù)式叫做多項(xiàng)式．

多項(xiàng)式中每一個(gè)單項(xiàng)式叫做多項(xiàng)式的________，不含字母的項(xiàng)叫做________．

________________的次數(shù)就是這個(gè)多項(xiàng)式的次數(shù)．

由________與________或________與________相乘組成的代數(shù)式叫做單項(xiàng)式．

單獨(dú)一個(gè)數(shù)或一個(gè)________也叫單項(xiàng)式．

單項(xiàng)式中的數(shù)字因數(shù)叫做這個(gè)單項(xiàng)式的________，單項(xiàng)式中________叫做單項(xiàng)式的次數(shù)．

單項(xiàng)式的系數(shù)是_______________，次數(shù)是________________．

將多項(xiàng)式按x的降冪排列為_(kāi)_____________．

把多項(xiàng)式按字母a的降冪排列是________．

代數(shù)式是________次_______項(xiàng)式，其中次數(shù)最高項(xiàng)的系數(shù)是_______．

若是六次三項(xiàng)式，則n=_______．

若單項(xiàng)式與的次數(shù)相同，則n=_______

是_______次_________項(xiàng)式．