因式分解训练题1．x2+2x-32．x2-2ax+a2+2x-32．x2-2ax+a23.(-2)m+2(-2)m-14．2y(x-y)2-(y-x)35．-28a2b+21ab2-7ab6．-6x2+9xy-3x7．-4a3+16a2+12a8．49x3yz3yz3+14x2y2z2-21xy2z29．6a(a-b)2-8(a-b)10.3m(x-y)-2(y-x)211．4m2-n2-n212．144a2-256b213．16x16-y4z414．(ab)15．2-4(a-b)2-4(a-b)2b16．64a-b2-(a-bc)282-(a-bc)28217．(xy-z)(x-yz)(y-xz)(y-x-z)18．m(m-x)(m-y)-y(x-m)(y-m)19．4a(x-y)2-2b(y-x)2+(y-x)20．(x-y)(a-b)-(y-x)2(y-x)12222．0.5x(a-b)-0.25y(b-a)23．9xyz-6xy21．(a-b)(a-abb)-ab(b-a)2z+3xz224．-a(a-x)(x-b)ab(a-x)(b-x)25．81x8-225a8-225a4b626．25a2b4c16-1227．(ab)-10028．289-(ax-by)229．361-(3a+2b)230．(a-b)31．4-81b4-81b4(a2b)32．(2x-3y)2-(x-3y)22-(x-3y)22-4a233．36a4x16-49b4x16-49b6y834．x2+8x+1635．1-6ab3+9a2b636．x6+24x2-38x+36138．9(x-y)212(x2-y2)4(xy)23+14437．x39．(2y-3x)2-2(3x-2y)+140．(2y-3x)2+2(3x-2y)+141．(a+b)2-4(a2-b2)+4(a-b)242．a2(b+c)2(b+c)2-2ab(a-c)(b+c)+b2(a-c)243．(x+y)2-2(x2-y2)+(x-y)244．x2-6x-16245．x2-y2-y2-z2+2yz+x+y-z46．x2-13xy-30y247．x2+13xy-30y248．x2-7xy-30y249．m2(p-q)-p+q50．(2m+3n)(2m-n)-4n(2m-n)．51．(x+2y)2-x2-2xy．52．a(ab+bc+ac)-abc．53．ab-a-b+1．54．xyz-xy-xz+x-yz+y+z-1．55．x4-2y4-2x3y+xy3．56．abc(a2+b2+c2)-a3bc+2ab2c2．57．(a-b-c)(a+b-c)-(b-c-a)(b+c-a)．58．a2(b-c)+b2(b-c)+b2(c-a)+c2(a-b)．58．a(a+b)(a-b)-a(a+b)2．59．(x2-2x)2+2x(x-2)+1．60．2acd-c2a-ad2．61．(x-y)2+12(y-x)z+36z2．62．x2-4ax+8ab-4b2．63．a2b2+c2d2-2abcd+2ab-2cd+1．64．(ax+by)2+(ay-bx)2+2(ax+by)(ay-bx)．65．(1-a2)(1-b2)-(a2-1)2(b2-1)2．66．3x4-48y4．367．(x+1)2-9(x-1)2．68．(x2+pq)2-(p+q)2x2．69．(1+2xy)2-(x2+y2)2．70．4a2b2-(a2b2-(a2+b2)2．71．4a2b2-(a2+b2-c2)2．72．(c2-a2-b2)2-4a2b2．73．(x2-b2+y2-a2)2-4(ab-xy)2．74．64a4(x+1)2-49b4(x+1)4．75．ab2-ac2+4ac-4a．76．4a2-c2-c2+6ab+3bc．77．x2+4xy+3y2．78．x2y2-18xy+65．79．x2+18x-144．80．x2+30x+144．81．x4+2x2-8．82．3x4+6x2-9．83．-m4+18m2-17．84．3x4-7x4+6x2-9．83．-m4+18m2-17．84．3x4-7x2y2-20y4．85．x5-2x5-2x3-8x．86．a3-5a2b-300ab2．87．x8+19x5-216x2．88．6a4n+k-a4n+k-a2n+k-35ak．89．30x2+8xy-182y2．90．m4+14m2-15．4