Question

1. find the square root. 169

Explanation:

Step1: Recall square root definition

A square root of $x$ is a number $y$ where $y^2 = x$.

Step2: Test integer values

Calculate $13^2 = 13 \times 13 = 169$, and $(-13)^2 = (-13) \times (-13) = 169$.

Answer:

$\pm 13$