0.2=2\АВ АВ=10......................
√
18
( √
6
- √
2
) ⋅ 3 ⋅
√
12
=
√
18
⋅
12
( √
6
- √
2
) ⋅ 3
=
√
216
( √
6
- √
2
) ⋅ 3
=
6
⋅
√
6
( √
6
- √
2
) ⋅ 3
= ( √
6
- √
2
) ⋅ 3 ⋅
6
0,5
+
1
= ( √
6
- √
2
) ⋅ 3 ⋅
6
1,5
= ( √
6
- √
2
) ⋅
3
⋅
6
⋅ √
6
=
( √
6
- √
2
) ⋅
18
⋅ √
6
=
√
6
⋅ 18 ⋅
√
6
+
- (
√
2
) ⋅ 18 ⋅
√
6
=
18 ⋅
6
0,5
⋅
2
-
18 ⋅
√
2
⋅
√
6
=
18
⋅
6
- 18 ⋅
√
2
⋅
6
=
108
- 18 ⋅
√
12
= 108 -
18
⋅
2
⋅ √
3
=
108 -
36
⋅ √
3
=
- 36 ⋅
√
3
+ 108
≈ -
36
⋅
1,7321
+ 108
≈
- 62,3538
+
108
≈
45,6462
Б) (5;-1) подставить место x первое значение в скобках и должно получится второе
1.
- домножаем на сопряженной знаменателю выражение, чтобы получить разность квадратов.
2.
здесь приводим к общему знаменателю