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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
−
3
)
−
36
=
0
(2)
2
(
x
−
2
)
=
16
(3)
2
(
x
＋
5
)
=
49
(4)
2
(
x
＋
8
)
=
6
(5)
2
(
x
＋
8
)
−
1
=
0
(6)
2
(
x
＋
2
)
−
25
=
0
(7)
2
(
x
＋
10
)
=
36
(8)
2
(
x
＋
2
)
=
64
(9)
2
(
x
＋
7
)
=
1
(10)
2
(
x
−
1
)
=
6
(11)
2
(
x
＋
2
)
=
36
(12)
2
(
x
＋
6
)
=
1
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
2
(
x
−
3
)
−
36
=
0
x
−
3
=
±
6
x
=
3
±
6
x
=
9
，
−3
(2)
2
(
x
−
2
)
=
16
x
−
2
=
±
4
x
=
2
±
4
x
=
6
，
−2
(3)
2
(
x
＋
5
)
=
49
x
＋
5
=
±
7
x
=
−
5
±
7
x
=
2
，
−12
(4)
2
(
x
＋
8
)
=
6
x
＋
8
6
=
±
x
6
=
−
8
±
(5)
2
(
x
＋
8
)
−
1
=
0
x
＋
8
=
±
1
x
=
−
8
±
1
x
=
−7
，
−9
(6)
2
(
x
＋
2
)
−
25
=
0
x
＋
2
=
±
5
x
=
−
2
±
5
x
=
3
，
−7
(7)
2
(
x
＋
10
)
=
36
x
＋
10
=
±
6
x
=
−
10
±
6
x
=
−4
，
−16
(8)
2
(
x
＋
2
)
=
64
x
＋
2
=
±
8
x
=
−
2
±
8
x
=
6
，
−10
(9)
2
(
x
＋
7
)
=
1
x
＋
7
=
±
1
x
=
−
7
±
1
x
=
−6
，
−8
(10)
2
(
x
−
1
)
=
6
x
−
1
6
=
±
x
6
=
1
±
(11)
2
(
x
＋
2
)
=
36
x
＋
2
=
±
6
x
=
−
2
±
6
x
=
4
，
−8
(12)
2
(
x
＋
6
)
=
1
x
＋
6
=
±
1
x
=
−
6
±
1
x
=
−5
，
−7