问题 填空题
计算:
1
x
=______,(-3a22=______,
(-5)2
=______.
答案

1
x
=
x
x2
=
x
x2
=
x
x

(-3a22=9a4

(-5)2
=|-5|=5.

故答案为

x
x
;9a4;5.

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