Question

The principal square root of a positive real number is ________ negative.
1) sometimes 2)never 3) always

Answer 1

2

Answer 2

We take the principal square root as the positive square root, so it's never negative. B

Answer 3

sometimes because the numbers technical have two square roots, both positive and negative because 4 * 4 =16 and -4 * -4 = 16, but the principal square root is considered positive