> 数学 >
计算:[(x+y)³ - (x+y)²]÷(x+y)²=_____
人气:467 ℃ 时间:2020-06-03 02:15:15
解答
[(x+y)³ - (x+y)²]÷(x+y)²
=(x+y)³ ÷(x+y)²- (x+y)²÷(x+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