(2014•西城区模拟)先化简,再求值:2x2x2-2x1÷(2?
2018-06-02 03:11:31E***
(2014•西城区模拟)先化简,再求值:2x2x2-2x 1÷(2x 1x 1 1x-1),其中x=2.(2014•西城区模拟)先化简,再求值:2x2x2-2x1÷(2x1x1...(2014•西城区模拟)先化简,再求值:2x2x2-2x1÷(2x1x11x-1)?
最佳回答
=2x2(x-1)2÷2x2(x 1)(x-1)
=2x2(x-1)2•(x 1)(x-1)2x2
=x 1x-1,
当x=2时,原式=2 12-1=3.
2018-06-02 05:39:34
很赞哦! (115)
相关文章
- 化简求值
- 数学-化简先化简,再求值;其中a=√3-3
- 化简求值 拜托啦!!~
- 化简求值a+b=15o,求值(1-tana-tanb-tanatanb)/(1+tana+tanb-tanatanb).
- (2014•万州区校级模拟)先化简,再求值:1a (11-a2-2a 1)÷a1...
- (2011•丽江模拟)先化简,再求值:(a2a 1-1a 1)×aa2-2a 1...
- (2015•杭州模拟)化简求值:(a-3)•9-a2a2-6a 9=_____,...
- 化简求值:a2-4a-2-3a 6,其中a=-3.
- (2015•杭州模拟)先化简,再求值:(2a 3b)2-(2a-3b)2,其中a...
- 2a-√a^2-4a 4化简求值 a=√3
- (2014•重庆校级模拟)先化简,再求值:x2-4x 4x3-2x2÷(x-4x...
- (2014•昆明模拟)先化简再求值:a-2a 3÷a2-42a 6-5a 2.当...
- (2015•南宁模拟)先化简,再求值:(12x2y xy 12y)÷(xy y)...
- (2014•金华模拟)先化简,再求值:(a 2)(a-2) 4(a-1)-4a,...
- (2015•西城区一模)化简求值:a2 3aa2 2a 1÷a 3a 1-1a ...
- 数学化简求值题
- 数学化简求值:
- 数学化简求值:
- 先化简在求值:(-1/3XY)
- 化简求值(a-1+2/a+1)÷(a
- 化简求值化简求值
- 三角函数化简求值.jpg
- 先化简,在求值。9x+6x
- 化简求值:a2-4a-3•(1-1a-2),其中a=13.
- (2014•南昌县模拟)先化简,再求值:a2-25a2 10a 25÷(1-5a...
- 河南中招数学化简求值题 是化简求值就可以
- (2014•江都区模拟)先化简,再求值:(a2-4a2-4a 4-12-a)÷2...
- 5a-17(当a=5时)怎样化简求值5a-17(当a=5时)先化简在求值
- 化简求值,2(2a-b)
- 化简求值|x-2| |y 1|=0怎么求值