Question

√5a-10 при а = 2; 2,2; 5,2; 22;

Answer 1

Відповідь:

(√5+4)²-2√5+1= 5+8√5+16-2√5+1= 6√5+22

Пояснення:

Answer 2

To evaluate the expression √(5a - 10) for different values of a, let's substitute the given values into the expression:

1. For a = 2: √(5 * 2 - 10) = √(10 - 10) = √0 = 0

2. For a = 2.2: √(5 * 2.2 - 10) = √(11 - 10) = √1 = 1

3. For a = 5.2: √(5 * 5.2 - 10) = √(26 - 10) = √16 = 4

4. For a = 22: √(5 * 22 - 10) = √(110 - 10) = √100 = 10

Therefore, when a takes the given values, the expression √(5a - 10) evaluates to: a = 2: 0 a = 2.2: 1 a = 5.2: 4 a = 22: 10