> 数学 >
计算:x-2+2+x分之4
人气:497 ℃ 时间:2020-04-14 23:09:49
解答
=(x-2)+4/(x+2)
=(x-2)(x+2)/(x+2)+4/(x+2)
=(x²-4+4)/(x+2)
=x²/(x+2)
推荐
猜你喜欢
© 2025 79432.Com All Rights Reserved.
电脑版|手机版