si123
si123
22-02-2017
Mathematics
contestada
What are the solution(s) of x2-4=0
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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)
Answer Link
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