Question

- 1) 2((a - b)2 +1); 2) 4(3-(a - b)2); 3) ((a - b)a - 8): 2; 4) (5a -(a+b)):3 npu a=5, b= -1.

Answer 1

Ответ:

1) 4a-4b+2

2)12-8a+8b

3) a (2)-ab-8/2

4) 7

Answer 2

Ответ:

1)4a-4b+2

2)15-8a+8b

Answer 3

Let's simplify the given expressions using the given values of a and b:

1. 2((a - b)2 + 1)

Substitute a = 5 and b = -1:

2((5 - (-1))2 + 1)

2(62 + 1)

2(36 + 1)

2(37)

Result: 74

2. 4(3 - (a - b)2)

Substitute a = 5 and b = -1:

4(3 - (5 - (-1))2)

4(3 - (6)2)

4(3 - 36)

4(-33)

Result: -132

3. ((a - b)a - 8) / 2

Substitute a = 5 and b = -1:

((5 - (-1)) * 5 - 8) / 2

(6 * 5 - 8) / 2

(30 - 8) / 2

22 / 2

Result: 11

4. (5a - (a + b)) / 3

Substitute a = 5 and b = -1:

(5 * 5 - (5 + (-1))) / 3

(25 - 4) / 3

21 / 3

Result: 7

So, the simplified expressions are:

1. 2((a - b)2 + 1) = 74
2. 4(3 - (a - b)2) = -132
3. ((a - b)a - 8) / 2 = 11
4. (5a - (a + b)) / 3 = 7