Question

351. 1) 7 (y - 3) – a (3- y);2) 6(a - 2)+a (2-a);​

Answer 1

Ответ:

1.   (у - 3)*(7 + а)

2.  (а - 2)*(6 - а)

Пошаговое объяснение:

1) 7 (y - 3) – a (3- y) = 7(y - 3) + a(у - 3)  = (у - 3)*(7 + а)

2) 6(a - 2)+a (2-a) =  6(a - 2) - a(а - 2) = (а - 2)*(6 - а)

Answer 2

It looks like you have two algebraic expressions, and you want to simplify them. Let's simplify each expression step by step:

1. 7(y - 3) - a(3 - y)

First, distribute the constants 7 and -a into the parentheses:

7y - 21 - 3a + ay

Now, combine like terms (terms with 'y' and constants):

(7y + ay) + (-21 - 3a)

To simplify further, factor out 'y' from the first term:

y(7 + a) - (21 + 3a)

So, the simplified expression is:

y(7 + a) - (21 + 3a)

2. 6(a - 2) + a(2 - a)

First, distribute the constants 6 and a into the parentheses:

6a - 12 + 2a - a^2

Now, combine like terms:

(6a + 2a) - 12 - a^2

Combine the 'a' terms:

8a - 12 - a^2

So, the simplified expression is:

8a - 12 - a^2