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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
＋
10
)
=
36
(2)
2
(
x
−
4
)
−
36
=
0
(3)
2
(
x
−
2
)
=
81
(4)
2
(
x
−
4
)
−
25
=
0
(5)
2
(
x
＋
1
)
−
36
=
0
(6)
2
(
x
＋
6
)
−
4
=
0
(7)
2
(
x
−
5
)
=
3
(8)
2
(
x
＋
6
)
=
4
(9)
2
(
x
−
3
)
=
5
(10)
2
(
x
＋
3
)
−
36
=
0
(11)
2
(
x
＋
9
)
=
36
(12)
2
(
x
＋
2
)
=
16
©2025 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
−
4
)
−
36
=
0
x
−
4
=
±
6
x
=
4
±
6
x
=
10
，
−2
(3)
2
(
x
−
2
)
=
81
x
−
2
=
±
9
x
=
2
±
9
x
=
11
，
−7
(4)
2
(
x
−
4
)
−
25
=
0
x
−
4
=
±
5
x
=
4
±
5
x
=
9
，
−1
(5)
2
(
x
＋
1
)
−
36
=
0
x
＋
1
=
±
6
x
=
−
1
±
6
x
=
5
，
−7
(6)
2
(
x
＋
6
)
−
4
=
0
x
＋
6
=
±
2
x
=
−
6
±
2
x
=
−4
，
−8
(7)
2
(
x
−
5
)
=
3
x
−
5
3
=
±
x
3
=
5
±
(8)
2
(
x
＋
6
)
=
4
x
＋
6
=
±
2
x
=
−
6
±
2
x
=
−4
，
−8
(9)
2
(
x
−
3
)
=
5
x
−
3
5
=
±
x
5
=
3
±
(10)
2
(
x
＋
3
)
−
36
=
0
x
＋
3
=
±
6
x
=
−
3
±
6
x
=
3
，
−9
(11)
2
(
x
＋
9
)
=
36
x
＋
9
=
±
6
x
=
−
9
±
6
x
=
−3
，
−15
(12)
2
(
x
＋
2
)
=
16
x
＋
2
=
±
4
x
=
−
2
±
4
x
=
2
，
−6