Question

simplify the expression 3√-25 + 4

Explanation:

Step1: Simplify the square root

$\sqrt{-25} = 5i$ (where $i$ is the imaginary unit, $i=\sqrt{-1}$)

Step2: Substitute and combine terms

$3\times5i + 4 = 15i + 4$

Step3: Rewrite in standard form

$4 + 15i$

Answer:

$4 + 15i$