[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
[1B2-00]
(1)
2
u
−
8
u
+
16
(2)
2
2
y
+
2
y
z
+
z
(3)
2
q
+
4
q
+
4
(4)
2
2
a
+
2
a
b
+
b
(5)
2
2
u
−
2
u
v
+
v
(6)
2
q
+
2
q
+
1
(7)
2
b
−
4
b
+
4
(8)
2
2
q
+
2
q
r
+
r
(9)
2
a
+
20
a
+
100
(10)
2
q
+
16
q
+
64
(11)
2
u
+
12
u
+
36
(12)
2
x
+
6
x
+
9
(13)
2
v
−
10
v
+
25
(14)
2
2
q
+
2
q
r
+
r
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
2
u
−
8
u
+
16
2
=
(
u
−
4
)
(2)
2
2
y
+
2
y
z
+
z
2
=
(
y
+
z
)
(3)
2
q
+
4
q
+
4
2
=
(
q
+
2
)
(4)
2
2
a
+
2
a
b
+
b
2
=
(
a
+
b
)
(5)
2
2
u
−
2
u
v
+
v
2
=
(
u
−
v
)
(6)
2
q
+
2
q
+
1
2
=
(
q
+
1
)
(7)
2
b
−
4
b
+
4
2
=
(
b
−
2
)
(8)
2
2
q
+
2
q
r
+
r
2
=
(
q
+
r
)
(9)
2
a
+
20
a
+
100
2
=
(
a
+
10
)
(10)
2
q
+
16
q
+
64
2
=
(
q
+
8
)
(11)
2
u
+
12
u
+
36
2
=
(
u
+
6
)
(12)
2
x
+
6
x
+
9
2
=
(
x
+
3
)
(13)
2
v
−
10
v
+
25
2
=
(
v
−
5
)
(14)
2
2
q
+
2
q
r
+
r
2
=
(
q
+
r
)