《分式的约分和通分习题》.docx
分式的约分和通分习题分式的约分和通分练习题 约分: (x+y)(a-b)223 ab24abc(x+y)2(a-b)38abc324abc2-32abc32-4abc 23 24abd2316abc4x+4x+3 +x-6x22x2-7x12a 249-2x2(y-x)27a(x-y)321-x 222x-3x+2xy+xym-2m+1 22xya-x1-ma-ab+b2 x-a2 a+b334x-3x-18 1-x 3x-92x-x+x+1通分: 3x1-x 2,-2x+12x-3x+22x-x+3 2,1-x1xx+1x-1x-11,2-a+b,3a2,1,1,12 (a+b)2-b212 m122-99-3m,12,4 1x-2,x-2 x-1x-3x+211 a-b,ba-ba-b,122 a2-2a+1,a2-1,a2+2a+1 1