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1、分式混合运算题绵阳市富乐实验中学分式的混合专题练习 姓名: 1.计算下列各题: a2+3a+1x+3yx+2y2x-3y-+1. 2 2-2-2222a-1a-1x-yx-yy-xaa+6316x2- (3) (4) x1 (5)-+, a+39-a2a-3a2-3aax-13132b22xyxy-+a-b+-(6)2 2x+66-2x9-x2a+bx-y2x+yy-x1x+2x-1aaa2-41x2-y2x-y-x+yxy x2-2x-x2-4x+4 (a-2-a+2)a 2已知x为整数,且 222x+18+2为整数,求所有的符合条件的x的值的和 x+33-xx-93、混合运算: 2x-3x
2、2-9x2xa+1a13x-1)( -22a-1aa-2a+1xxx+2x-2x-4a2-5a+2a2-4x2-2x+1x-3x-35(x+2-) +1)2(1+) ( x-2x-2a+2x+1a+4a+4x2-1111x+1x2-4x+4x2-2x1xy1-22-+1 - 22x+1x-1x-2x+1x2-4x+2xx-yx-yx+ya2+b2a2-b2 (+2) aba-bxx+3x2+2x+1x+2x-1x2-16-2-2)2 (2 x-1x-1x+3x-2xx-4x+4x+4x4计算:( x+2x-14-x-),并求当x=-3时原式的值 xx2-2xx2-4x+4xx2-13x-5、先化简,再取一个你喜欢的数代入求值: x-1x+1x