题目内容
(x-y+2z)^2(-x+y-2z)^2等于
A、0
B、1
C、(x-y+2z)^4
D、-(x-y+2z)^2
解析：C。(x-y+2z)^2(-x+y-2z)^2=(x-y+2z)^2(x-y+2z)^2=（x-y+2z)^4
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题目内容
(x-y+2z)^2(-x+y-2z)^2等于
A、0
B、1
C、(x-y+2z)^4
D、-(x-y+2z)^2
解析：C。(x-y+2z)^2(-x+y-2z)^2=(x-y+2z)^2(x-y+2z)^2=（x-y+2z)^4
