> 数学 >
x-2分之x-4+x方-4x+4分之4除以x-2分之x其中x=根号2
人气:175 ℃ 时间:2020-05-24 00:04:18
解答
=(x-4)/(x-2)+[4/(x-2)²×(x-2)/x]
=(x-4)/(x-2)+4/x(x-2)
=(x²-4x+4)/x(x-2)
=(x-2)²/x(x-2)
=(x-2)/x
推荐
猜你喜欢
© 2024 79432.Com All Rights Reserved.
电脑版|手机版