ինքնուրույն աշխատանք

1.
17 — 1, 17
86 — 1, 2, 43, 86
2) 1

2.
11, 13, 17, 19
3) 4

3.
99 – 10 + 1 = 90
3) 90

4.
(256 * 256 * 4)/10
(6 * 6 * 4)/10
4) 4

A = {3; 12; 17; 18}

1.
3 + 17 = 20
2) 20

2.
12, 18
36 : 18 = 2
36 : 12 = 3
3) 36

3.
3 — 1, 3
12 — 1, 2, 3, 4, 6
17 — 1, 17
18 — 1, 2, 3, 6, 9
3) 1

4.
3 + 12 + 17 + 18 = 50
50/4 = 12,5
3) 12,5

1.
(a² – 4)/(2 – a) + 2 + 3a
(a² – 4)/(2 – a) = (a – 2)(a + 2)/-(a – 2) = -a – 2
-a – 2 + 2 + 3a = 2a
2) 2a

1.
(5 + 3/5) : 7/10 – 1/2
5 + 3/5 = (25 + 3)/5 = 28/5
28/5 : 7/10 = 28/5 * 10/7 = 8
8 – 1/2 = (16 – 1)/2 = 15/2 = 7,5
4) 7,5

1.
(x – 2)(5 – x) ≥ 0
. –    +     –
—·——·—
․   2      5
1) [2; 5]

2.
√(1 – 4x) ≥ 5
ԹԱԲ՝
1 – 4x ≥ 0
4x ≤ 1
x ≤ 1/4
√(1 – 4x) = 5
1 – 4x = 25
4x = -24
x = -6
2) (-∞; -6]

1.
x + (x – 3) = 15
2x = 12
x = 6
1) 6

2.
15 * 20/100 = 3
1) 3

3.
3/80x = 15
x = 15 : 3/80
x = 400
3) 400

4.
1 – 1/3 = 2/3
3 * 2/3 = 2
2) 2