化简求值:x²-9分之x²-6x+9除(x-3减x+3分之3x-9)减x-1分之1
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解决时间 2021-11-12 08:31
- 提问者网友:沉默的哀伤
- 2021-11-11 19:08
化简求值:x²-9分之x²-6x+9除(x-3减x+3分之3x-9)减x-1分之1
最佳答案
- 五星知识达人网友:杯酒困英雄
- 2021-11-11 20:20
由(2x-1)/3+(x+3)/2=0
2(2x-1)+3(x+3)=0
4x-2+3x+9=0
7x+7=0,所以x=-1
(x²-6x+9)/(x²-9)÷「x-3+(3x-9)/3]-1/(x-1)
=(x-3)/(x+3)÷(x-3+x-3)-1/(x-1)
=1/2(x+3)-1/(x-1)
=(x-1-2x-6)/2(x-3)(x-1)
=(-x-7)/2(x-3)(x-1)
=(1-7)/2(-1-3)(-1-1)
=-6/16
=-3/8
2(2x-1)+3(x+3)=0
4x-2+3x+9=0
7x+7=0,所以x=-1
(x²-6x+9)/(x²-9)÷「x-3+(3x-9)/3]-1/(x-1)
=(x-3)/(x+3)÷(x-3+x-3)-1/(x-1)
=1/2(x+3)-1/(x-1)
=(x-1-2x-6)/2(x-3)(x-1)
=(-x-7)/2(x-3)(x-1)
=(1-7)/2(-1-3)(-1-1)
=-6/16
=-3/8
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