Mathematics, 16.07.2019 02:30 camperangie3364
How many x intercept appear on the graph of the polynomial function f(x)=x4-5x2 on this one
Answers: 1
![f(x)=x^4-5x^2\\\\x^4-5x^2=0\\\\x^2(x^2-5)=0\\\\x^2[x^2-(\sqrt5)^2]=0\\\\x^2(x-\sqrt5)(x+\sqrt5)=0\iff x=0\ \vee\ x=\sqrt5\ \vee\ x=-\sqrt5](/tpl/images/0094/7375/105ba.png)
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How many x intercept appear on the graph of the polynomial function f(x)=x4-5x2 on this one...
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