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©2026 数学クラブ http://sugaku.club/
月 日（ ）
● 次の方程式を解きなさい
[211-00]
(1)
2
(
x
＋
6
)
=
1
(2)
2
(
x
＋
4
)
=
36
(3)
2
(
x
＋
4
)
=
9
(4)
2
(
x
−
4
)
=
4
(5)
2
(
x
＋
10
)
=
1
(6)
2
(
x
−
6
)
=
25
(7)
2
(
x
−
7
)
=
36
(8)
2
(
x
−
1
)
=
25
(9)
2
(
x
−
7
)
=
4
(10)
2
(
x
＋
9
)
=
1
(11)
2
(
x
−
3
)
−
9
=
0
(12)
2
(
x
＋
9
)
−
36
=
0
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
2
(
x
＋
6
)
=
1
x
＋
6
=
±
1
x
=
−
6
±
1
x
=
−5
，
−7
(2)
2
(
x
＋
4
)
=
36
x
＋
4
=
±
6
x
=
−
4
±
6
x
=
2
，
−10
(3)
2
(
x
＋
4
)
=
9
x
＋
4
=
±
3
x
=
−
4
±
3
x
=
−1
，
−7
(4)
2
(
x
−
4
)
=
4
x
−
4
=
±
2
x
=
4
±
2
x
=
6
，
2
(5)
2
(
x
＋
10
)
=
1
x
＋
10
=
±
1
x
=
−
10
±
1
x
=
−9
，
−11
(6)
2
(
x
−
6
)
=
25
x
−
6
=
±
5
x
=
6
±
5
x
=
11
，
1
(7)
2
(
x
−
7
)
=
36
x
−
7
=
±
6
x
=
7
±
6
x
=
13
，
1
(8)
2
(
x
−
1
)
=
25
x
−
1
=
±
5
x
=
1
±
5
x
=
6
，
−4
(9)
2
(
x
−
7
)
=
4
x
−
7
=
±
2
x
=
7
±
2
x
=
9
，
5
(10)
2
(
x
＋
9
)
=
1
x
＋
9
=
±
1
x
=
−
9
±
1
x
=
−8
，
−10
(11)
2
(
x
−
3
)
−
9
=
0
x
−
3
=
±
3
x
=
3
±
3
x
=
6
，
0
(12)
2
(
x
＋
9
)
−
36
=
0
x
＋
9
=
±
6
x
=
−
9
±
6
x
=
−3
，
−15