What are the solution(s) of x^2-4=0?

Answer

+2  and -2

Explanation

x^2-4=0 Is a quadrilateral expression. we can solve it using complete square method.

x²-4=0

x² - 4 + 4 = 0 + 4

x² = 4

x = √4                          or   x = - √4

  = +2                                      = -2

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