问题
填空题
计算:
|
答案
=7;(-7)2
(2
)2=22×(5
)2=4×5=20;5
=8 2
=8 2
=2;4
=1 3
=3 (
)23
.3 3
故答案为:7,20,2,
.3 3
计算:
|
=7;(-7)2
(2
)2=22×(5
)2=4×5=20;5
=8 2
=8 2
=2;4
=1 3
=3 (
)23
.3 3
故答案为:7,20,2,
.3 3