Answers

  • Brainly User
2016-07-03T21:03:24+08:00
X² - 16 = 0

Solve by extracting the roots:

x² - 16 + 16 = 0 + 16

x² = 16

 \sqrt{ x^{2} }  =  \sqrt{16}

x = +4, -4
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