［文字サイズの変更］
▼
▲
©2019 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
)
=
8
(2)
2
(
x
＋
10
)
−
49
=
0
(3)
2
(
x
−
5
)
=
36
(4)
2
(
x
＋
8
)
−
9
=
0
(5)
2
(
x
＋
5
)
−
25
=
0
(6)
2
(
x
＋
5
)
=
1
(7)
2
(
x
−
6
)
=
4
(8)
2
(
x
＋
10
)
=
4
(9)
2
(
x
＋
6
)
=
1
(10)
2
(
x
−
5
)
−
49
=
0
(11)
2
(
x
＋
10
)
=
3
(12)
2
(
x
−
5
)
−
100
=
0
©2019 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
2
(
x
−
6
)
=
8
x
−
6
2
=
±
2
x
2
=
6
±
2
(2)
2
(
x
＋
10
)
−
49
=
0
x
＋
10
=
±
7
x
=
−
10
±
7
x
=
−3
，
−17
(3)
2
(
x
−
5
)
=
36
x
−
5
=
±
6
x
=
5
±
6
x
=
11
，
−1
(4)
2
(
x
＋
8
)
−
9
=
0
x
＋
8
=
±
3
x
=
−
8
±
3
x
=
−5
，
−11
(5)
2
(
x
＋
5
)
−
25
=
0
x
＋
5
=
±
5
x
=
−
5
±
5
x
=
0
，
−10
(6)
2
(
x
＋
5
)
=
1
x
＋
5
=
±
1
x
=
−
5
±
1
x
=
−4
，
−6
(7)
2
(
x
−
6
)
=
4
x
−
6
=
±
2
x
=
6
±
2
x
=
8
，
4
(8)
2
(
x
＋
10
)
=
4
x
＋
10
=
±
2
x
=
−
10
±
2
x
=
−8
，
−12
(9)
2
(
x
＋
6
)
=
1
x
＋
6
=
±
1
x
=
−
6
±
1
x
=
−5
，
−7
(10)
2
(
x
−
5
)
−
49
=
0
x
−
5
=
±
7
x
=
5
±
7
x
=
12
，
−2
(11)
2
(
x
＋
10
)
=
3
x
＋
10
3
=
±
x
3
=
−
10
±
(12)
2
(
x
−
5
)
−
100
=
0
x
−
5
=
±
10
x
=
5
±
10
x
=
15
，
−5