Anna0114 Anna0114

31-05-2015
Mathematics

Answered

what are the zeros of (x-2)(x^2-9)

Answer :

Аноним Аноним

01-06-2015

[tex](x-2)(x^2-9)=0\iff x-2=0\ or\ x^2-9=0\\\\x-2=0\ \ \ \ |add\ 2\ to\ both\ sides\\\\\boxed{x=2}\\\\x^2-9=0\ \ \ \ |add\ 9\ to\ both\ sides\\\\x^2=9\iff x=\pm\sqrt9\to \boxed{x=-3\ or\ x=3}\\\\Answer:\boxed{x=-3\ or\ x=2\ or\ x=3}[/tex]

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