问题 填空题
计算:(
32
-
8
)
2
=______.(3-
10
)7(3+
10
)6
=______.
答案

(

32
-
8
2

=

32
×
2
-
8
×
2

=

64
-
16

=8-4

=4;

(3-

10
)7(3+
10
)
6

=[(3-

10
)6(3+
10
)
6
]•(3-
10

=[(3+

10
)(3-
10
)]6•(3-
10

=(-1)6•(3-

10

=3-

10

故答案为:4;3-

10

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