Question

A) √81 = -9; 2) -√0,01 = 0,1; 6) √(-12)² = -12; B) √√-2-² = 0,5.​

Answer 1

It looks like you've provided a series of mathematical statements involving square roots. Let's evaluate each of them:

A)

1. √81 = 9 (The square root of 81 is 9, not -9.)
2. -√0.01 = -0.1 (The square root of 0.01 is 0.1, but it should be negative when you include the negative sign.)
3. √((-12)²) = |(-12)| = 12 (The square root of the square of -12 is the absolute value of -12, which is 12.)

B) 4) √√(-2)² = √2 (The square root of the square of -2 is the absolute value of -2, which is 2, and then taking the square root of 2 gives you √2, which is approximately 1.4142, not 0.5.)

So, in summary:

1. √81 = 9
2. -√0.01 = -0.1
3. √((-12)²) = 12
4. √√(-2)² = √2