Respuesta :

wegnerkolmp2741o

Answer:

(4 + 7i)(4 – 7i)

Step-by-step explanation:

This pair will produce a real answer because they are complex conjugates.

Complex conjugates ( a+bi) (a-bi)  when multiplied together form a real number ( a^2 + b^2)

aasianai812

Answer:

D. (4+7i)(4-7i)

Step-by-step explanation:

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