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©2024 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
7
u
+
2
u
(2)
2
2
x
+
6
x
(3)
2
9
p
−
4
p
(4)
2
9
p
−
3
p
(5)
2
5
u
+
10
u
(6)
2
5
p
+
p
(7)
2
2
u
−
3
u
(8)
2
9
a
−
10
a
(9)
2
2
a
+
a
(10)
2
9
p
−
5
p
(11)
2
3
x
−
7
x
(12)
2
5
p
+
3
p
(13)
2
4
x
+
7
x
(14)
2
4
a
+
9
a
©2024 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
2
7
u
+
2
u
=
u
(
7
u
+
2
)
(2)
2
2
x
+
6
x
=
2
x
(
x
+
3
)
(3)
2
9
p
−
4
p
=
p
(
9
p
−
4
)
(4)
2
9
p
−
3
p
=
3
p
(
3
p
−
1
)
(5)
2
5
u
+
10
u
=
5
u
(
u
+
2
)
(6)
2
5
p
+
p
=
p
(
5
p
+
1
)
(7)
2
2
u
−
3
u
=
u
(
2
u
−
3
)
(8)
2
9
a
−
10
a
=
a
(
9
a
−
10
)
(9)
2
2
a
+
a
=
a
(
2
a
+
1
)
(10)
2
9
p
−
5
p
=
p
(
9
p
−
5
)
(11)
2
3
x
−
7
x
=
x
(
3
x
−
7
)
(12)
2
5
p
+
3
p
=
p
(
5
p
+
3
)
(13)
2
4
x
+
7
x
=
x
(
4
x
+
7
)
(14)
2
4
a
+
9
a
=
a
(
4
a
+
9
)