kxmberly04 kxmberly04

20-06-2020
Mathematics

contestada

Which of the following expressions is equal to x^2+16?
A. (x + 4i)(x-4i)
B. (x +4i)^2
C. (x-4i)^2
D. (x + 2i)(x - 8i)

Which of the following expressions is equal to x216 A x 4ix4i B x 4i2 C x4i2 D x 2ix 8i class=

Respuesta :

devishri1977 devishri1977

21-06-2020

Answer:

A

Step-by-step explanation:

x² + 16 = 0

x² = - 16

x² = i² * 4² {i² = -1}

x² = (4i)²

x=√(4i)²

x=±4i

x² + 16 = (x + 4i)(x - 4i)

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