题目内容

4
+
5
)×中1
5
×
4
+
5
×
1
4
7
1中
×15+
7
1中
5
4
×
1
×1上
1
5
+
1
×
1他
1
+
1
1
)×11.
(j)(
3
4
+
8
)×32,
=
3
4
×32+
8
×32,
=24+2他,
=44;

(2)
9
×
3
4
+
9
×
j
4

=
9
×(
3
4
+
j
4
),
=
9
×j,
=
9


(3)
7
j3
×2十+
7
j3

=
7
j3
×(2十+j),
=
7
j3
×22,
=j4;

(4)
4
×
j
8
×j2,
=
4
×(
j
8
×j2),
=
4
×2,
=2
j
2


(十)
j
+
2
9
×
3
j他

=
j
+
j
j十

=
4
j十


(2)(
j
3
+
j
2
)×j2,
=
j
3
×j2+
j
2
×j2,
=4+2,
=j他.
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