Understand i as a number with i^2=-1 and represent complex numbers as a+bi.
Rewrite a simple complex expression in standard form \(a+bi\)
Problem
Rewrite \(3i+5\) in standard complex form \(a+\text{bi}\) by placing the real term first and preserving the imaginary coefficient.
Big Picture
What this problem is really about
Standard complex form places the real term first and the imaginary term second without changing either value. We’ll identify the two term types, use commutativity to reorder them, preserve the imaginary coefficient and sign, and check the resulting a-plus-bi structure.
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