Answer
$\lt 1,3\gt$ and $\sqrt {10}$
Work Step by Step
The formula to find the magnitude of a vector is:
$|n|=\sqrt{n_1^2+n_2^2}$
Here, $u+v=\lt 3,-2 \gt+\lt -2,5 \gt =\lt 1,3\gt$
and $|\lt 1,3\gt|=\sqrt{1^2+(3)^2}=\sqrt {10}$
Hence, our final answers are: $\lt 1,3\gt$ and $\sqrt {10}$
