Question

Let r=1+2i and s=3+3i. Find r−s

A. −2−i
B. 2+i
C. −2+5i
D. 4−i

Answer 1

If r=1+2i and s=3+3i then. r-s will be

(1+2i)-(3+3i)
1 + 2i - 3 - 3i
2i - 3i + 1 - 3
-i - 2

A is the answer