Legendsneverfail Legendsneverfail

08-01-2021
Mathematics

contestada

Which of the following is equivalent to
the expression (i + 5)(3 + 4i)?

Respuesta :

omzibas omzibas

08-01-2021

Answer: 11+23i

Step-by-step explanation:

(i+5)(3+4i)

First foil

3i+4i^2 +15+20i

Then combine like terms

23i+15+4i^2

i^2 = -1 so,

23i+15+4(-1)

11+23i

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