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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
＋
10
)
=
36
(2)
2
(
x
＋
3
)
=
16
(3)
2
(
x
−
7
)
−
1
=
0
(4)
2
(
x
＋
4
)
=
36
(5)
2
(
x
＋
8
)
=
25
(6)
2
(
x
−
5
)
−
49
=
0
(7)
2
(
x
−
2
)
=
5
(8)
2
(
x
−
5
)
−
3
=
0
(9)
2
(
x
＋
9
)
−
3
=
0
(10)
2
(
x
＋
8
)
=
4
(11)
2
(
x
＋
3
)
=
9
(12)
2
(
x
−
4
)
=
36
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
2
(
x
＋
10
)
=
36
x
＋
10
=
±
6
x
=
−
10
±
6
x
=
−4
，
−16
(2)
2
(
x
＋
3
)
=
16
x
＋
3
=
±
4
x
=
−
3
±
4
x
=
1
，
−7
(3)
2
(
x
−
7
)
−
1
=
0
x
−
7
=
±
1
x
=
7
±
1
x
=
8
，
6
(4)
2
(
x
＋
4
)
=
36
x
＋
4
=
±
6
x
=
−
4
±
6
x
=
2
，
−10
(5)
2
(
x
＋
8
)
=
25
x
＋
8
=
±
5
x
=
−
8
±
5
x
=
−3
，
−13
(6)
2
(
x
−
5
)
−
49
=
0
x
−
5
=
±
7
x
=
5
±
7
x
=
12
，
−2
(7)
2
(
x
−
2
)
=
5
x
−
2
5
=
±
x
5
=
2
±
(8)
2
(
x
−
5
)
−
3
=
0
x
−
5
3
=
±
x
3
=
5
±
(9)
2
(
x
＋
9
)
−
3
=
0
x
＋
9
3
=
±
x
3
=
−
9
±
(10)
2
(
x
＋
8
)
=
4
x
＋
8
=
±
2
x
=
−
8
±
2
x
=
−6
，
−10
(11)
2
(
x
＋
3
)
=
9
x
＋
3
=
±
3
x
=
−
3
±
3
x
=
0
，
−6
(12)
2
(
x
−
4
)
=
36
x
−
4
=
±
6
x
=
4
±
6
x
=
10
，
−2