> 数学 >
计算:(X的平方-2X+1-Y)除以(X+Y-1)
人气:202 ℃ 时间:2020-05-25 16:09:34
解答
x^-2x+1-y^2=(x-1)^2-y^2=(x-y-1)(x+y-1) (x^-2x+1-y^2)/(x+y-1)=x-y-1
推荐
猜你喜欢
© 2025 79432.Com All Rights Reserved.
电脑版|手机版