2x/(x-8y)(x+8y)-(x+8y)/ (x-8y)(x+8y)怎麼计算了详细_数学解答

2x/(x-8y)(x+8y)-(x+8y)/ (x-8y)(x+8y)怎麼计算了详细

人气：209 ℃　时间：2020-06-23 19:46:41

解答

2x/(x-8y)(x+8y)-(x+8y)/ (x-8y)(x+8y)
=(2x-x-8y)(x-8y)(x+8y)
=(x-8y)/(x-8y)(x+8y)
=1/(x+8y)