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If i=√ -1 then (4-i) (4+i)= A) 15 B) 16 C) 17 D) 17-8i E) 17+8i

If i=√ -1 then (4-i) (4+i)= A) 15 B) 16 C) 17 D) 17-8i E) 17+8i
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If i=√ -1 then (4-i) (4+i)=

A) 15
B) 16
C) 17
D) 17-8i
E) 17+8i

asked
User AlexD
by
7.8k points

1 Answer

1 vote
I think the answer is

C. 17
answered
User Sifriday
by
7.9k points
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