pchezdabrat1 pchezdabrat1

06-05-2020
Mathematics

contestada

What is the value of x, when x2 + 5 = 21? A) 2 or -2 B) 4 or -4 C) 5.5 or -5.5 D) 8 or -8

Respuesta :

Toodles568 Toodles568

07-05-2020

Answer:

x2 + 5 = 21

(b )

x = 4 or -4

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