[文字サイズの変更]
▼
▲
©2026 数学クラブ http://sugaku.club/
月 日( )
● 次の式を因数分解しなさい
[1B0-00]
(1)
2
9
a
−
a
(2)
2
2
p
+
2
p
(3)
2
4
p
+
8
p
(4)
2
2
u
−
u
(5)
2
2
p
+
9
p
(6)
2
9
u
+
6
u
(7)
2
6
u
−
4
u
(8)
2
6
u
+
6
u
(9)
2
2
a
−
2
a
(10)
2
2
x
+
4
x
(11)
2
3
x
+
4
x
(12)
2
a
−
3
a
(13)
2
10
a
+
6
a
(14)
2
2
p
−
8
p
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
2
9
a
−
a
=
a
(
9
a
−
1
)
(2)
2
2
p
+
2
p
=
2
p
(
p
+
1
)
(3)
2
4
p
+
8
p
=
4
p
(
p
+
2
)
(4)
2
2
u
−
u
=
u
(
2
u
−
1
)
(5)
2
2
p
+
9
p
=
p
(
2
p
+
9
)
(6)
2
9
u
+
6
u
=
3
u
(
3
u
+
2
)
(7)
2
6
u
−
4
u
=
2
u
(
3
u
−
2
)
(8)
2
6
u
+
6
u
=
6
u
(
u
+
1
)
(9)
2
2
a
−
2
a
=
2
a
(
a
−
1
)
(10)
2
2
x
+
4
x
=
2
x
(
x
+
2
)
(11)
2
3
x
+
4
x
=
x
(
3
x
+
4
)
(12)
2
a
−
3
a
=
a
(
a
−
3
)
(13)
2
10
a
+
6
a
=
2
a
(
5
a
+
3
)
(14)
2
2
p
−
8
p
=
2
p
(
p
−
4
)