[文字サイズの変更]
▼
▲
©2026 数学クラブ http://sugaku.club/
月 日( )
● 次の方程式を解きなさい
[220-00]
(1)
8
x
(
x
−
2
)
=
0
(2)
−6
x
(
x
+
3
)
=
0
(3)
2
x
(
x
+
8
)
=
0
(4)
−3
x
(
x
−
5
)
=
0
(5)
7
x
(
x
−
4
)
=
0
(6)
−
x
(
x
+
6
)
=
0
(7)
x
(
x
+
1
)
=
0
(8)
−6
x
(
x
+
1
)
=
0
(9)
−9
x
(
x
−
3
)
=
0
(10)
−7
x
(
x
−
1
)
=
0
(11)
3
x
(
x
−
6
)
=
0
(12)
4
x
(
x
−
6
)
=
0
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
8
x
(
x
−
2
)
=
0
x
=
0
,
2
(2)
−6
x
(
x
+
3
)
=
0
x
=
0
,
−3
(3)
2
x
(
x
+
8
)
=
0
x
=
0
,
−8
(4)
−3
x
(
x
−
5
)
=
0
x
=
0
,
5
(5)
7
x
(
x
−
4
)
=
0
x
=
0
,
4
(6)
−
x
(
x
+
6
)
=
0
x
=
0
,
−6
(7)
x
(
x
+
1
)
=
0
x
=
0
,
−1
(8)
−6
x
(
x
+
1
)
=
0
x
=
0
,
−1
(9)
−9
x
(
x
−
3
)
=
0
x
=
0
,
3
(10)
−7
x
(
x
−
1
)
=
0
x
=
0
,
1
(11)
3
x
(
x
−
6
)
=
0
x
=
0
,
6
(12)
4
x
(
x
−
6
)
=
0
x
=
0
,
6