Task 2. Match the conimunication words with the comments. Innovation, Simple,
Simple, Connect, Information,
Technology, Message, Communicate, Decide
1
15 the use of science or engineering to create useful things
2. When you
you tell someone something
3. When you make
it means you think about something and then make up your
mund
4. When you
with someone you talk or meet with them to tell them something
5. А
is something you want to tell someone else
6. An
is a new idea, thing, or way to do something
7. When you want
about something, you want to know things about it
8. When something is
that means it does not have a lot parts and it is easy to
көмек керек болып тұр.​

Объяснение:

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Объяснение:

1). (x+3)(2-x)/x+6≥0 Умножим обе стороны неравенства на x+6 и получим (x+3)(2-x)≥0. Отсюда (x+3)≥0 и (2-x)≥0. Тогда x≥-3 и x≤2

2). 2х²+7х+5>0 Приравняем данное неравенство к равенству.

2х²+7х+5 = 0

D=-7²-4·2·5 = 49-40 = √9 = 3²

x1= (-7+3)/2·2 = -4/4 = -1

x2= (-7-3)/4 = - 2,5

3). (x-2)²(x²+6x-9)<0

(x-2)²<0 и (x²+6x-9)<0

Решим сначала (x-2)²<0

= x²-2·2·x+2²<0 = x²-4x+4<0 Приравняем данное неравенство к нолю и получим x²-4x+4=0

D=-4+²-4·1·4=16-16+ = √0 = 0

x1 = (4+0)/2·1= 4/2 = 2

x2 = (4-0)/2·1= 4/2 = 2

Теперь решим (x²+6x-9)<0. Приравняем данное неравенство к нолю и получим x²+6x-9=0

D= 6²-4·1·(-9) = 36+36 = √72

x1 = (-6+√72)/2 = -3+(√72/2)

x2 = (-6-√72)/2 = -3-(√72/2)        

4). x²-5x+4/x³-64>0 Умножим обе стороны неравенства на x³-64  и получим: x²-5x+4>0. Приравняем данное неравенство к нолю.

x²-5x+4=0

D=-5²-4·1·4 = 25-16 = √9 = 3²

x1= (5+3)0/2= 8/2= 4

x2= (5-3)/2 = 2/2 = 1

5). (x-2)(2+x)(5-x)≤0 Отсюда (x-2)≤0 (2+x)≤0 (5-x)≤0  

Тогда: x≤2, x≤-2 и x≥5