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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
[210-20]
(1)
2
2
x
=
2
(2)
2
5
x
=
5
(3)
2
5
−5
x
=
−
36
(4)
2
5
x
=
5
(5)
2
2
2
x
=
49
(6)
2
108
3
x
=
49
(7)
2
−2
x
=
−2
(8)
2
49
−5
x
=
−
5
(9)
2
−5
x
=
−5
(10)
1
2
4
x
=
6
5
©2025 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
2
2
x
=
2
2
x
=
1
x
=
±
1
(2)
2
5
x
=
5
2
x
=
1
x
=
±
1
(3)
2
−5
x
5
=
−
36
2
x
1
=
36
x
1
=
±
6
(4)
2
5
x
=
5
2
x
=
1
x
=
±
1
(5)
2
2
x
2
=
49
2
x
1
=
49
x
1
=
±
7
(6)
2
3
x
108
=
49
2
x
36
=
49
x
6
=
±
7
(7)
2
−2
x
=
−2
2
x
=
1
x
=
±
1
(8)
2
−5
x
49
=
−
5
2
x
49
=
25
x
7
=
±
5
(9)
2
−5
x
=
−5
2
x
=
1
x
=
±
1
(10)
1
2
x
6
4
=
5
2
x
24
=
5
x
2
30
=
±
5
