Question

question 8
evaluate \\(\sqrt{49}\\). select the principal square root.
\\(\circ -7\\)
\\(\circ 7\\) and \\(-7\\)
\\(\circ 7\\)
\\(\circ 7\\) or \\(-7\\)

Explanation:

Step1: Define principal square root

The principal square root of a non-negative number is the non-negative square root.

Step2: Calculate square root of 49

$\sqrt{49} = 7$, since $7^2 = 49$ and 7 is non-negative.

Answer:

7