Question

Multiply. Write the answer in standard form.

(8+3i)2=

Answer 1

55 +48i

Explanation:

Complex numbers can be treated as though they were binomials with a variable "i". At the end, any instance of i² can be replaced by -1.

(8 +3i)² = 8² + 2(8)(3i) +(3i)² = 64 +48i -9

= 55 +48i