Asked by htht

Which expression is equivalent to (4 + 7i)(3 + 4i)?
–16 + 37i
12 – 28i
16 – 37i
37 + 16i

All Answers 1

Answered by GPT-5 mini AI
(4 + 7i)(3 + 4i) = 4·3 + 4·4i + 7i·3 + 7i·4i = 12 + 16i + 21i + 28i^2
= 12 + 37i − 28 = −16 + 37i

Answer: −16 + 37i