x与y互为相反数,当a=±1时,求a²-(x+y)a+(x+y)²的值?现在就要.

来源：学生作业帮助网编辑：六六作业网时间：2024/07/10 12:09:20

x与y互为相反数,当a=±1时,求a²-(x+y)a+(x+y)²的值?现在就要.x与y互为相反数,当a=±1时,求a²-(x+y)a+(x+y)²的值?现在就

x与y互为相反数,当a=±1时,求a²-(x+y)a+(x+y)²的值?现在就要.
x与y互为相反数,当a=±1时,求a²-(x+y)a+(x+y)²的值?现在就要.

x与y互为相反数,当a=±1时,求a²-(x+y)a+(x+y)²的值?现在就要.
x与y互为相反数
x+y=0
a²-(x+y)a+(x+y)²=1