Question

root equations
solve for a

a² = 13
?
a=±√11
a=±√13
a=√13
a=±4

Explanation:

Step1: Recall square root property

To solve \(a^{2}=13\), use the square root property: if \(x^{2}=k\) (\(k\geq0\)), then \(x = \pm\sqrt{k}\).

Step2: Apply the property

Here, \(x = a\) and \(k = 13\). So applying the property, we get \(a=\pm\sqrt{13}\).

Answer:

B. \(a = \pm\sqrt{13}\) (assuming the second option is labeled as B with text \(a=\pm\sqrt{13}\))