LucyyaLmanGin4arook LucyyaLmanGin4arook

07-06-2016
Mathematics

Answered

Which equations are true for x = –2 and x = 2? Check all that apply.

x2 – 4 = 0

x2 = –4

3x2 + 12 = 0

4x2 = 16

2(x – 2)2 = 0

Verified Answer :

garydesir1 garydesir1

07-06-2016

Hi Brainiac

x² - 4 = 0

Add 4 to both sides

x² - 4 + 4 = 0 + 4

x² = 4

Now take the square root

x= +/-√4

x= 2 or x= -2

The answer is A

I hope that's help :)

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