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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
−
7
)
−
36
=
0
(2)
2
(
x
＋
4
)
=
1
(3)
2
(
x
＋
6
)
=
8
(4)
2
(
x
＋
8
)
−
9
=
0
(5)
2
(
x
−
4
)
=
64
(6)
2
(
x
−
3
)
=
1
(7)
2
(
x
＋
4
)
−
100
=
0
(8)
2
(
x
＋
8
)
=
4
(9)
2
(
x
−
4
)
=
4
(10)
2
(
x
＋
7
)
=
100
(11)
2
(
x
−
1
)
=
4
(12)
2
(
x
＋
1
)
−
16
=
0
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
2
(
x
−
7
)
−
36
=
0
x
−
7
=
±
6
x
=
7
±
6
x
=
13
，
1
(2)
2
(
x
＋
4
)
=
1
x
＋
4
=
±
1
x
=
−
4
±
1
x
=
−3
，
−5
(3)
2
(
x
＋
6
)
=
8
x
＋
6
2
=
±
2
x
2
=
−
6
±
2
(4)
2
(
x
＋
8
)
−
9
=
0
x
＋
8
=
±
3
x
=
−
8
±
3
x
=
−5
，
−11
(5)
2
(
x
−
4
)
=
64
x
−
4
=
±
8
x
=
4
±
8
x
=
12
，
−4
(6)
2
(
x
−
3
)
=
1
x
−
3
=
±
1
x
=
3
±
1
x
=
4
，
2
(7)
2
(
x
＋
4
)
−
100
=
0
x
＋
4
=
±
10
x
=
−
4
±
10
x
=
6
，
−14
(8)
2
(
x
＋
8
)
=
4
x
＋
8
=
±
2
x
=
−
8
±
2
x
=
−6
，
−10
(9)
2
(
x
−
4
)
=
4
x
−
4
=
±
2
x
=
4
±
2
x
=
6
，
2
(10)
2
(
x
＋
7
)
=
100
x
＋
7
=
±
10
x
=
−
7
±
10
x
=
3
，
−17
(11)
2
(
x
−
1
)
=
4
x
−
1
=
±
2
x
=
1
±
2
x
=
3
，
−1
(12)
2
(
x
＋
1
)
−
16
=
0
x
＋
1
=
±
4
x
=
−
1
±
4
x
=
3
，
−5