Question

1) 5,31 + (- 9,65) + (-4,35) + (+ 2,69); 3 2) − 2 ² + (+ 6,8) + (− 1,25) + (+3¹); 3) 1) - 5 ² 2 + ( + 7 ² ) + ( - 4 ² ) + ( - 7 ² ).​

Answer 1

Решение на фото!!!!!!!!!!!!!!!!

Answer 2

Let's calculate the given expressions step by step:

1. 5.31 + (-9.65) + (-4.35) + (+2.69)

Adding the positive and negative numbers:

5.31 - 9.65 - 4.35 + 2.69 = -6

So the result is -6.

2. -2² + (+6.8) + (-1.25) + (+3¹)

Squaring -2:

(-2)² + (+6.8) + (-1.25) + (+3¹)

4 + 6.8 - 1.25 + 3 = 12.55

So the result is 12.55.

3. -5² 2 + (+7²) + (-4²) + (-7²)

Calculating the squares:

(-5)² 2 + (+7)² + (-4)² + (-7)²

25 2 + 49 + 16 + 49 = 102

So the result is 102.

Therefore, the results of the given expressions are:

1. -6
2. 12.55
3. 102