Question

Evaluate (2 + 3√−1) 4 + (2 − 3√−1) 4 .

Answer 1

Answer:

(2+2√-1 ) 4+(2-3√-1) 4

(8+12√-1) +(8-12√-1)

(8+8) +12√-1-12√-1

8+8

16