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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
＋
6
)
=
4
(2)
2
(
x
＋
10
)
−
2
=
0
(3)
2
(
x
＋
7
)
−
64
=
0
(4)
2
(
x
＋
8
)
=
1
(5)
2
(
x
＋
2
)
−
36
=
0
(6)
2
(
x
＋
2
)
−
81
=
0
(7)
2
(
x
−
4
)
=
1
(8)
2
(
x
＋
7
)
−
49
=
0
(9)
2
(
x
＋
4
)
=
64
(10)
2
(
x
＋
2
)
=
7
(11)
2
(
x
＋
2
)
=
100
(12)
2
(
x
＋
3
)
−
9
=
0
©2024 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
2
(
x
＋
6
)
=
4
x
＋
6
=
±
2
x
=
−
6
±
2
x
=
−4
，
−8
(2)
2
(
x
＋
10
)
−
2
=
0
x
＋
10
2
=
±
x
2
=
−
10
±
(3)
2
(
x
＋
7
)
−
64
=
0
x
＋
7
=
±
8
x
=
−
7
±
8
x
=
1
，
−15
(4)
2
(
x
＋
8
)
=
1
x
＋
8
=
±
1
x
=
−
8
±
1
x
=
−7
，
−9
(5)
2
(
x
＋
2
)
−
36
=
0
x
＋
2
=
±
6
x
=
−
2
±
6
x
=
4
，
−8
(6)
2
(
x
＋
2
)
−
81
=
0
x
＋
2
=
±
9
x
=
−
2
±
9
x
=
7
，
−11
(7)
2
(
x
−
4
)
=
1
x
−
4
=
±
1
x
=
4
±
1
x
=
5
，
3
(8)
2
(
x
＋
7
)
−
49
=
0
x
＋
7
=
±
7
x
=
−
7
±
7
x
=
0
，
−14
(9)
2
(
x
＋
4
)
=
64
x
＋
4
=
±
8
x
=
−
4
±
8
x
=
4
，
−12
(10)
2
(
x
＋
2
)
=
7
x
＋
2
7
=
±
x
7
=
−
2
±
(11)
2
(
x
＋
2
)
=
100
x
＋
2
=
±
10
x
=
−
2
±
10
x
=
8
，
−12
(12)
2
(
x
＋
3
)
−
9
=
0
x
＋
3
=
±
3
x
=
−
3
±
3
x
=
0
，
−6