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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
[210-00]
(1)
2
2
x
=
8
(2)
2
−7
x
=
−1
(3)
2
−6
x
=
−5
(4)
2
−2
x
=
−8
(5)
2
−3
x
=
−108
(6)
2
2
x
=
162
(7)
2
−3
x
=
−300
(8)
2
2
x
=
98
(9)
2
−3
x
=
−108
(10)
2
2
x
=
162
(11)
2
−2
x
=
−72
(12)
2
x
=
9
©2025 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
2
2
x
=
8
2
x
=
4
x
=
±
2
(2)
2
−7
x
=
−1
2
x
1
=
7
x
7
=
±
7
(3)
2
−6
x
=
−5
2
x
5
=
6
x
30
=
±
6
(4)
2
−2
x
=
−8
2
x
=
4
x
=
±
2
(5)
2
−3
x
=
−108
2
x
=
36
x
=
±
6
(6)
2
2
x
=
162
2
x
=
81
x
=
±
9
(7)
2
−3
x
=
−300
2
x
=
100
x
=
±
10
(8)
2
2
x
=
98
2
x
=
49
x
=
±
7
(9)
2
−3
x
=
−108
2
x
=
36
x
=
±
6
(10)
2
2
x
=
162
2
x
=
81
x
=
±
9
(11)
2
−2
x
=
−72
2
x
=
36
x
=
±
6
(12)
2
x
=
9
x
=
±
3