一道数学题,关于分式混合运算
一道数学题,关于分式混合运算
(5/x-1)-(3/x+2)+(3/x+3)-(5/x-2)
条件是全的,“/”是分数线 -是减
(5/x-1)-(3/x+2)+(3/x+3)-(5/x-2)
条件是全的,“/”是分数线 -是减
数学人气:732 ℃时间:2020-03-25 10:49:25
优质解答
原式=[5(x+2)-3(x-1)]/(x-1)(x+2)-[5(x+3)-3(x-2)]/(x-2)(x+3)=(2x+13)/(x²+x-2)-(2x+21)/(x²+x-6)=[(2x+13)(x²+x-6)-(2x+21)(x²+x-2)]/(x²+x-6)(x²+x-2)=(2x³+16x²+x-78-2...
我来回答
类似推荐
猜你喜欢
- 1已知下列方程x+4ax-4a+3=0,x+(a-1)x+a=0,x+2ax-2a=0至少有一个方程有实根,求实数a的取值范围
- 2找出规律,
- 3已知:如图,D是△ABC的边AB上一点,CN∥AB,DN交AC于点M,MA=MC. ①求证:CD=AN; ②若∠AMD=2∠MCD,求证:四边形ADCN是矩形.
- 4已知函数f(x)=2cosxsin(x+π/3)-√3/2最小正周期
- 5修改病句并改正 I had a lots of fun I went to there by a train
- 6一群猴子采摘水蜜桃.猴王不在的时候,一个大猴子1时可摘15kg,一个小猴子1时可采11kg;
- 7He had talent that he failed to realize.that 引导是定语从句吗?
- 8哪个对?英语句法
- 9I am for what she has give me.翻译?
- 10形容月色的四字词语