Question

write this product in standard form ( 7 + 7i)( 6 + 7i)

Answer 1

Distribute it 


42+49i+42i+49^2    (i^2=-1)

49i^2+91i+42

-49+91i+42 

It equal to -7+91i

Answer 2

the correct answer is -7 + 91i