因式分解之三分组分解法.docx

例题h(1)xyXy+1(2)5x152x+3(3)7x-3y+xy一21xX(X1)(X2)-6(5)ab(x1+1)+x(a+/?')(6)2bmlSbn+4<38(7)a2-3a-ab+3hWa+2h-3a?-6ab(,9)6x2-15ab-1Oar+9bx22-3x-6jty+9y例题2：(1)5am-15am+3abnt-9bm(2)x4+x3+x2+x(3)x4+x3+4f+3x+3(4)OX2-bx2+bx-ax+a-b(V+l)(x"-jq>+y2)+2xy+2xy<6)r2+bx2-ax-bx+a+b/-x2y+y-x+y-y2(8)(x2+2y+lf+10y+5+5x?(9)X4+2x'+6f+4x+80r+2by+cx-2izy-bx-2cy例题3：(1)Cchcd+chd(2)'+"+'+2+2+2(X-2y)(x-3y)+(x-4>')U-5,y)+(x3y)(x5y)十(龙一2y)U一4y)(4)r5-r4+ar-«(5)r-y+«2+bx-by+ab(6)2-9y2-3y(7)x2-y2-z2-2yz(8)-2-+l(9)n1+ntri0v(y-2)(m-1)(,*+1)4例题4：(1)(+c)(c)+b(b+2</)(2)+2cb-b(3)/-Or-/+y(4)4-2+4x-4</:/一/-9z?+6”(6)X4+64疗-4+3(8)3+-2xy+/-/(9"+/+-y3-y2-yQa+hc2c2&匕1例题5：(1)«:-4"+4b'-2+4b(2)x2-3x+6>t+9)；-9y¢5)*+2a+2a+2«+1(6).t2-y+xy-+y-j>(7)a+46+4b'-ac-2c(8)'+r2+at+1(9)xyxzy+2yzZQtD.vy'2xz+za-2ay例题6：(1)2ar4bx+2x3ay+6by-3y(2)Cj+4Z?'4a+8b4ab(3)x5+x4-2x3-2x2+x+l(4)x2-8xy+16+6x-24j+9(5)4f+l(6)*-32+i(7)3-7+6(8)a2-ab+ac-bc<!S)2(3a2-)-(3-4)a0-x(-1-)-1例题7：(1)加3+2(帆-l)(m+Dab(c2+笛)+cd(a2+b2)abc+d)(cd)+cda+b)(a)(4)3(人+Cd)(be÷9ad)I-Xy(I-封)x"'y35(a+h)-“一从7)(a+hyf+("-ayf(三)a2+ax-b2+bx(9)2ab-a2-b2+103+x-y-y5例题8：(1)4X-+2x'x*(2)4f+2ab+6a+36(3)ub+4a4?9-4/一4“力-庐(5)16w2-9/+30ab-25尸n2-9+-n2+mn44/+25尸-20刈一36(8)aa+bx2-b(9"_3/+2>ab1-尸Q16yz+25-16-4z2例题9：(1)/-2"+a2-9(2)U+2)(x-2)-4y(x->)(3)x2(x+l)-y2(y+l)4/-4(ab+4)+2(5>3(+x-l)-l(6)(2-2x)?-2xy+x2y(7)ar(y3+/)+外(次？+ay(8)“*+“22+匕“(9)a，+a+a3-VJ+6x+1Ix+6例题10：(1)2(x+1)-y2(y+1)+xy2m2(n+2)-12w-3n2(m-3)(X+2)(X-2)-4)，(X-y)-5(4)(l-x2)(l-)-4jx">+8+V+X*+-+13'+6力3c6?C(T)2a(a2+a+)+a4+/+1(8)/-4+y'-2xy(9)-3x2+40+9j+26x+24例题Ih(DX2-21Jty+98./+%-7),$+丁-/J-例,-1(3)16/-9/-32+16(4)2x'-X2-2x+1(5)%1-6x'+1Ix-6(6)3'+6%-3a2c-6abc(7)4+/从+"/一1片+25(9)/+4%?+1Gb4ab+4cd-/6-4bd+8bcd例题12t(l)x2+6xy+9y2-2x-6y+l(2)m?+？+Gn6mImn+9x"-7x-8