Question

simplify.
7i - 4i
write your answer in the form a + bi.

Explanation:

Step1: Identify the form

The complex number is given as \(7i - 4i\). First, combine like terms (the imaginary parts).

Step2: Combine like terms

\(7i-4i=(7 - 4)i = 3i\). In the form \(a+bi\), \(a = 0\) and \(b=3\), so it is \(0 + 3i\).

Answer:

\(0 + 3i\)