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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
−
4
)
=
36
(2)
2
(
x
＋
6
)
−
4
=
0
(3)
2
(
x
−
5
)
−
4
=
0
(4)
2
(
x
＋
3
)
=
16
(5)
2
(
x
＋
3
)
−
81
=
0
(6)
2
(
x
＋
7
)
−
1
=
0
(7)
2
(
x
−
6
)
=
16
(8)
2
(
x
−
4
)
=
49
(9)
2
(
x
−
7
)
=
9
(10)
2
(
x
−
7
)
−
16
=
0
(11)
2
(
x
−
2
)
−
1
=
0
(12)
2
(
x
−
4
)
=
49
©2025 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
2
(
x
−
4
)
=
36
x
−
4
=
±
6
x
=
4
±
6
x
=
10
，
−2
(2)
2
(
x
＋
6
)
−
4
=
0
x
＋
6
=
±
2
x
=
−
6
±
2
x
=
−4
，
−8
(3)
2
(
x
−
5
)
−
4
=
0
x
−
5
=
±
2
x
=
5
±
2
x
=
7
，
3
(4)
2
(
x
＋
3
)
=
16
x
＋
3
=
±
4
x
=
−
3
±
4
x
=
1
，
−7
(5)
2
(
x
＋
3
)
−
81
=
0
x
＋
3
=
±
9
x
=
−
3
±
9
x
=
6
，
−12
(6)
2
(
x
＋
7
)
−
1
=
0
x
＋
7
=
±
1
x
=
−
7
±
1
x
=
−6
，
−8
(7)
2
(
x
−
6
)
=
16
x
−
6
=
±
4
x
=
6
±
4
x
=
10
，
2
(8)
2
(
x
−
4
)
=
49
x
−
4
=
±
7
x
=
4
±
7
x
=
11
，
−3
(9)
2
(
x
−
7
)
=
9
x
−
7
=
±
3
x
=
7
±
3
x
=
10
，
4
(10)
2
(
x
−
7
)
−
16
=
0
x
−
7
=
±
4
x
=
7
±
4
x
=
11
，
3
(11)
2
(
x
−
2
)
−
1
=
0
x
−
2
=
±
1
x
=
2
±
1
x
=
3
，
1
(12)
2
(
x
−
4
)
=
49
x
−
4
=
±
7
x
=
4
±
7
x
=
11
，
−3