［文字サイズの変更］
▼
▲
©2018 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
−
4
)
−
100
=
0
(2)
2
(
x
−
3
)
−
3
=
0
(3)
2
(
x
−
4
)
=
9
(4)
2
(
x
＋
5
)
=
5
(5)
2
(
x
−
2
)
=
36
(6)
2
(
x
＋
5
)
=
4
(7)
2
(
x
−
3
)
−
1
=
0
(8)
2
(
x
＋
5
)
=
100
(9)
2
(
x
＋
1
)
−
8
=
0
(10)
2
(
x
＋
10
)
=
49
(11)
2
(
x
＋
5
)
−
49
=
0
(12)
2
(
x
＋
6
)
=
100
©2018 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
2
(
x
−
4
)
−
100
=
0
x
−
4
=
±
10
x
=
4
±
10
x
=
14
，
−6
(2)
2
(
x
−
3
)
−
3
=
0
x
−
3
3
=
±
x
3
=
3
±
(3)
2
(
x
−
4
)
=
9
x
−
4
=
±
3
x
=
4
±
3
x
=
7
，
1
(4)
2
(
x
＋
5
)
=
5
x
＋
5
5
=
±
x
5
=
−
5
±
(5)
2
(
x
−
2
)
=
36
x
−
2
=
±
6
x
=
2
±
6
x
=
8
，
−4
(6)
2
(
x
＋
5
)
=
4
x
＋
5
=
±
2
x
=
−
5
±
2
x
=
−3
，
−7
(7)
2
(
x
−
3
)
−
1
=
0
x
−
3
=
±
1
x
=
3
±
1
x
=
4
，
2
(8)
2
(
x
＋
5
)
=
100
x
＋
5
=
±
10
x
=
−
5
±
10
x
=
5
，
−15
(9)
2
(
x
＋
1
)
−
8
=
0
x
＋
1
2
=
±
2
x
2
=
−
1
±
2
(10)
2
(
x
＋
10
)
=
49
x
＋
10
=
±
7
x
=
−
10
±
7
x
=
−3
，
−17
(11)
2
(
x
＋
5
)
−
49
=
0
x
＋
5
=
±
7
x
=
−
5
±
7
x
=
2
，
−12
(12)
2
(
x
＋
6
)
=
100
x
＋
6
=
±
10
x
=
−
6
±
10
x
=
4
，
−16