因式分解分组分解法的练习题目.docx

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1、题319⑴2x2maxam⑵x2xya2xa2y⑶7m23nmn21m⑷0.3ax0.6ayx2y⑸10mx12nx5my6ny⑹a3x2a3yx2y⑺ax2bx2cx2ay2⑻2ax2ay3bx4cy3by题320⑸a26ab9b216x2y2⑹3m237m2y7y题321⑴xy3xy⑵m2m13n2m1⑶a2a12aa1a1⑷a24ab4b2x22x1by2cy24cx⑹1a21b24ab⑺a28ab16b26a24b9⑻x2y3x7y24x2yxy2题322⑴ax2ay22axyab2⑵x26xy9y

2、24x12y⑶9a218a9b24b24⑸axby2aybx2⑹a4a2b2b4⑺20xy2y2x20y3xyy⑻x2y2a224x2y2题323⑵m2mn2n2nm2⑶abx2y2xya2b2⑷4m2n2m2n2x22⑸m42m23m21m12216⑺x22mx2n2x22mxm2n2m2⑻m2n42m28n28mn1题324⑶a2b2c2d22adbc⑷a24b29c24ab12bc6ac⑸a2b2c24d22ab4cd⑹x23x2224x364x⑺36mx36my3m2yx2⑻？a24b2c2a2b4b

3、cc题326证明：a2b2c22ab2bc2acabc2题327已知ab0，求a32b3a2b2ab2的值题328证明：若a2b2c2abacbc0，则abc题329⑴x464⑶x4x18⑸3x37x24⑺y511y3y题330⑴x3y2xy230y2⑶x36x211x6⑸x42x36x210x5⑺y4y33y24y4题331⑴xy1x1y1xy⑵x47x21⑷x33x2⑹x44x3⑻a5a1⑵a35a25a4⑷a24ab3b22bcc2⑹a33a250⑻ax2bx2a2xb2x2abxa2bab2⑵a2b

4、cb2cac2ab题332证明：ab2abab21ab2a12b12题333先化简，再求值：abc2abc2abc2abc2，其中4，b25a5题334把多项式a4b4c42a2b22b2c22a2c2分解因式。2224ac的值。题336已知3ba2c，求代数式a9b4c