22-02-2017
Mathematics

contestada

What are the solution(s) of x2-4=0

Respuesta :

wolf1728 wolf1728

22-02-2017

Is that x^2 -4 = 0?
Then the two solutions are x = 2 and x = -2

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charlottekrist charlottekrist

22-02-2017

First you add 4 on both sides
X^2=0
Then you take square on both sides
X=+- the square root of 4
Simplify that
X=plus or minus 2

The answer can be either -2 or +2 (which is just 2)

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