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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
)
=
25
(3)
2
(
x
−
2
)
−
100
=
0
(4)
2
(
x
−
4
)
−
49
=
0
(5)
2
(
x
−
3
)
=
1
(6)
2
(
x
−
1
)
−
6
=
0
(7)
2
(
x
＋
8
)
−
6
=
0
(8)
2
(
x
＋
5
)
−
16
=
0
(9)
2
(
x
−
4
)
−
9
=
0
(10)
2
(
x
＋
3
)
=
4
(11)
2
(
x
＋
1
)
−
10
=
0
(12)
2
(
x
＋
8
)
−
4
=
0
©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
)
=
25
x
＋
3
=
±
5
x
=
−
3
±
5
x
=
2
，
−8
(3)
2
(
x
−
2
)
−
100
=
0
x
−
2
=
±
10
x
=
2
±
10
x
=
12
，
−8
(4)
2
(
x
−
4
)
−
49
=
0
x
−
4
=
±
7
x
=
4
±
7
x
=
11
，
−3
(5)
2
(
x
−
3
)
=
1
x
−
3
=
±
1
x
=
3
±
1
x
=
4
，
2
(6)
2
(
x
−
1
)
−
6
=
0
x
−
1
6
=
±
x
6
=
1
±
(7)
2
(
x
＋
8
)
−
6
=
0
x
＋
8
6
=
±
x
6
=
−
8
±
(8)
2
(
x
＋
5
)
−
16
=
0
x
＋
5
=
±
4
x
=
−
5
±
4
x
=
−1
，
−9
(9)
2
(
x
−
4
)
−
9
=
0
x
−
4
=
±
3
x
=
4
±
3
x
=
7
，
1
(10)
2
(
x
＋
3
)
=
4
x
＋
3
=
±
2
x
=
−
3
±
2
x
=
−1
，
−5
(11)
2
(
x
＋
1
)
−
10
=
0
x
＋
1
10
=
±
x
10
=
−
1
±
(12)
2
(
x
＋
8
)
−
4
=
0
x
＋
8
=
±
2
x
=
−
8
±
2
x
=
−6
，
−10