Question

3у-у(-7у-13у) 5х-7у+(6у-12-х) 8.4а+(1.7-6.4в-2.7в)

Answer 1

Ответ:

Пошаговое объяснение:

3у-у(-7у-13у) =3у+7у^2 +13у^2 =3у+20у^2

5х-7у+(6у-12-х) =5х-7у+6у-12-х=4х-у-12

8.4а+(1.7-6.4в-2.7в)=8,4а+1,7-9,1в

Answer 2

To simplify the given expressions, let's perform the operations step by step:

1. 3у - у(-7у - 13у) First, distribute the -у to the terms inside the parentheses: 3у - у * (-7у) - у * (-13у)

Now, simplify each term: 3у + 7у^2 + 13у^2

Combine like terms: (3 + 7 + 13) у^2 23у^2

So the simplified expression is 23у^2.

2. 5х - 7у + (6у - 12 - х) Simply combine like terms: 5х - х + 6у - 7у - 12

Now, combine the x and у terms: (5х - х) + (6у - 7у) - 12

Simplify further: 4х - у - 12

The simplified expression is 4х - у - 12.

3. 8.4а + (1.7 - 6.4в - 2.7в) Simply combine the numeric terms and the в terms: 8.4а + (1.7 - 9.1в)

The simplified expression is 8.4а + 1.7 - 9.1в or 8.4а - 9.1в + 1.7.