整式混合運(yùn)算練習(xí)試題

..整式計(jì)算題一．填空題2．單項(xiàng)式：的系數(shù)是,次數(shù)是；3．是次單項(xiàng)式；4．的一次項(xiàng)系數(shù)是,常數(shù)項(xiàng)是；5．單項(xiàng)式xy2z是_____次單項(xiàng)式.6．多項(xiàng)式a2－ab2－b2有_____項(xiàng),其中－ab2的次數(shù)是.7．整式①,②3x－y2,③23x2y,④a,⑤πx+y,⑥,⑦x+1中單項(xiàng)式有,多項(xiàng)式有8．x+2xy+y是次多項(xiàng)式.9．b的倍的相反數(shù)是；10．設(shè)某數(shù)為x,10減去某數(shù)的2倍的差是；11．的次數(shù)是；12．當(dāng)x＝2,y＝－1時(shí),代數(shù)式的值是；13．當(dāng)y＝時(shí),代數(shù)式3y－2與的值相等；14．－23ab的系數(shù)是,次數(shù)是次．15．多項(xiàng)式x3y2－2xy2－－9是___次___項(xiàng)式,其中最高次項(xiàng)的系數(shù)是,二次項(xiàng)是,常數(shù)項(xiàng)是．16.若與是同類項(xiàng),則m=.17．在x2,<x＋y>,,－3中,單項(xiàng)式是,多項(xiàng)式是,整式是．18．單項(xiàng)式的系數(shù)是____________,次數(shù)是____________．19．多項(xiàng)式x2y＋xy－xy2－53中的三次項(xiàng)是____________．20．當(dāng)a=____________時(shí),整式x2＋a－1是單項(xiàng)式．21．多項(xiàng)式xy－1是____________次____________項(xiàng)式．22．當(dāng)x＝－3時(shí),多項(xiàng)式－x3＋x2－1的值等于____________．23．一個(gè)n次多項(xiàng)式,它的任何一項(xiàng)的次數(shù)都____________．24.如果3xky與－x2y是同類項(xiàng),那么k=________．二、合并下列多項(xiàng)式中的同類項(xiàng)〔13x2+4x－2x2－x+x2－3x－1；〔2－a2b+2a2b〔3a3－a2b+ab2+a2b－2ab2+b3；〔42a2b+3a2b－a2b〔5〔2x+3y+〔5x－4y；〔6〔8a－7b－〔4a－5b〔7〔8x－3y－〔4x+3y－z+2z；〔8〔2x－3y－3〔4x－2y〔93a2+a2－2〔2a2－2a+〔3a－a2〔103b－2c－[－4a+〔c+3b]+c三．先去括號(hào),再合并同類項(xiàng)：〔1〔2x+3y+〔5x－4y；〔2〔8a－7b－〔4a－5b〔3〔8x－3y－〔4x+3y－z+2z〔4〔2x－3y－3〔4x－2y〔53a2+a2－2〔2a2－2a+〔3a－a2〔63b－2c－[－4a+〔c+3b]+c四、求代數(shù)式的值1．當(dāng)x＝－2時(shí),求代數(shù)式的值。2．當(dāng),時(shí),求代數(shù)式的值。3．當(dāng)時(shí),求代數(shù)式的值。4．當(dāng)x＝2,y＝－3時(shí),求的值。5．若,求代數(shù)式的值。五、計(jì)算下列各多項(xiàng)式的值：\1．x5－y3＋4x2y－4x＋5,其中x＝－1,y＝－2；2．x3－x＋1－x2,其中x＝－3；六．先化簡(jiǎn),再求值：1、5〔3a2b－ab2－〔ab2+3a2b,其中a=,b=－1．2、求5ab-2[3ab-<4ab2+ab>]-5ab2的值,其中a=,b=-3、〔3a2b-ab2—〔ab2+3a2b其中a=EQ\F<1,2>,b=-12.先化簡(jiǎn),后求值：<1>,其中,<2>,其中a=4<3>〔x3－2y3－3x2y－[3〔3x3－2y3－4x2y],其中x=-2,y=-13.已知,求〔1；〔2。4.已知a、b互為相反數(shù),c、d互為倒數(shù),x的絕對(duì)值是3,求5.當(dāng)多項(xiàng)式不含二次項(xiàng)和一次項(xiàng)時(shí),求m、n