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©2025 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
)
−
7
=
0
(2)
2
(
x
−
4
)
=
16
(3)
2
(
x
＋
6
)
=
25
(4)
2
(
x
−
2
)
=
8
(5)
2
(
x
＋
7
)
=
1
(6)
2
(
x
＋
9
)
=
64
(7)
2
(
x
−
5
)
−
4
=
0
(8)
2
(
x
＋
9
)
−
64
=
0
(9)
2
(
x
−
3
)
−
1
=
0
(10)
2
(
x
＋
10
)
=
4
(11)
2
(
x
−
3
)
=
4
(12)
2
(
x
−
4
)
=
4
©2025 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
2
(
x
−
6
)
−
7
=
0
x
−
6
7
=
±
x
7
=
6
±
(2)
2
(
x
−
4
)
=
16
x
−
4
=
±
4
x
=
4
±
4
x
=
8
，
0
(3)
2
(
x
＋
6
)
=
25
x
＋
6
=
±
5
x
=
−
6
±
5
x
=
−1
，
−11
(4)
2
(
x
−
2
)
=
8
x
−
2
2
=
±
2
x
2
=
2
±
2
(5)
2
(
x
＋
7
)
=
1
x
＋
7
=
±
1
x
=
−
7
±
1
x
=
−6
，
−8
(6)
2
(
x
＋
9
)
=
64
x
＋
9
=
±
8
x
=
−
9
±
8
x
=
−1
，
−17
(7)
2
(
x
−
5
)
−
4
=
0
x
−
5
=
±
2
x
=
5
±
2
x
=
7
，
3
(8)
2
(
x
＋
9
)
−
64
=
0
x
＋
9
=
±
8
x
=
−
9
±
8
x
=
−1
，
−17
(9)
2
(
x
−
3
)
−
1
=
0
x
−
3
=
±
1
x
=
3
±
1
x
=
4
，
2
(10)
2
(
x
＋
10
)
=
4
x
＋
10
=
±
2
x
=
−
10
±
2
x
=
−8
，
−12
(11)
2
(
x
−
3
)
=
4
x
−
3
=
±
2
x
=
3
±
2
x
=
5
，
1
(12)
2
(
x
−
4
)
=
4
x
−
4
=
±
2
x
=
4
±
2
x
=
6
，
2