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©2024 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
−
3
)
−
49
=
0
(2)
2
(
x
−
1
)
−
25
=
0
(3)
2
(
x
−
5
)
=
3
(4)
2
(
x
＋
9
)
=
36
(5)
2
(
x
＋
9
)
=
8
(6)
2
(
x
＋
6
)
=
3
(7)
2
(
x
＋
6
)
=
49
(8)
2
(
x
＋
3
)
−
49
=
0
(9)
2
(
x
＋
1
)
=
1
(10)
2
(
x
−
3
)
=
5
(11)
2
(
x
−
4
)
=
6
(12)
2
(
x
−
2
)
−
3
=
0
©2024 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
2
(
x
−
3
)
−
49
=
0
x
−
3
=
±
7
x
=
3
±
7
x
=
10
，
−4
(2)
2
(
x
−
1
)
−
25
=
0
x
−
1
=
±
5
x
=
1
±
5
x
=
6
，
−4
(3)
2
(
x
−
5
)
=
3
x
−
5
3
=
±
x
3
=
5
±
(4)
2
(
x
＋
9
)
=
36
x
＋
9
=
±
6
x
=
−
9
±
6
x
=
−3
，
−15
(5)
2
(
x
＋
9
)
=
8
x
＋
9
2
=
±
2
x
2
=
−
9
±
2
(6)
2
(
x
＋
6
)
=
3
x
＋
6
3
=
±
x
3
=
−
6
±
(7)
2
(
x
＋
6
)
=
49
x
＋
6
=
±
7
x
=
−
6
±
7
x
=
1
，
−13
(8)
2
(
x
＋
3
)
−
49
=
0
x
＋
3
=
±
7
x
=
−
3
±
7
x
=
4
，
−10
(9)
2
(
x
＋
1
)
=
1
x
＋
1
=
±
1
x
=
−
1
±
1
x
=
0
，
−2
(10)
2
(
x
−
3
)
=
5
x
−
3
5
=
±
x
5
=
3
±
(11)
2
(
x
−
4
)
=
6
x
−
4
6
=
±
x
6
=
4
±
(12)
2
(
x
−
2
)
−
3
=
0
x
−
2
3
=
±
x
3
=
2
±