原式=(x²+y²)(x²-y²)×(x+y)/(x²+y²)×1/(x+y)²
=(x²-y²)/(x+y)
=x-y
(x的4次方-y的4次方)除以(x方+y方)/(x+y)乘以1/(x+y)的平方
(x的4次方-y的4次方)除以(x方+y方)/(x+y)乘以1/(x+y)的平方
数学人气:850 ℃时间:2019-12-12 21:53:30
优质解答
我来回答
类似推荐
猜你喜欢
- 1Look!It says,“ (not swim) in the river.It’s dangerous!” 答案是don’t swim,为什么?
- 2-----Nancy is not coming tonight.----- But she _____!A.promisesB.promisedC.will promiseD.had p
- 31.有一组数按照一定的规律排列.依次是2,-5,9,-14,20,x,35…,你能求出x的值吗?x的值是多少?
- 4一瓶内装着体积为500cm³;,密度为1.2X10³㎏/m³的盐水,要将这盐水稀释后的密度变为1.1X10³㎏/m³,应再加多少体积的水?
- 5怎样才能非常快速地判断一个数是质数还是合数?小学五年级水平.
- 6甲,乙两辆汽车从A,B两地同时同向开出,开出后2小时,两车相距141千米;出发后5小时,两车相遇.A,B两地相
- 7“和你一起”用英语怎么说?
- 8Do people grow cotton in the southeast of china?改为被动语态
- 9高通和低通滤波器是什么意思了
- 10自行车哪里运用了轮轴原理,哪里增大或减小了摩擦力,