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14 October, 17:32

What is the value of x, when x^2 + 5 = 21?

A

5.5 or - 5.5

B

4 or - 4

C

2 or - 2

D

8 or - 8

+5
Answers (1)
  1. 14 October, 17:52
    0
    The answer is B. 4 or - 4
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