Mathematics
kkyoung13
2015-10-30 11:22:24
Find a cubic function with the given zeros. Square root of five., - Square root of five., -7
ANSWERS
LorineCorse
2015-10-30 13:02:40

[latex]f x= egin{cases} pm sqrt{5}\ -7 end{cases}implies egin{cases} x=sqrt{5}implies &(x-sqrt{5})=0\ x=-sqrt{5}implies &(x+sqrt{5})=0\ x=-7implies &(x+7)=0 end{cases} \\\ stackrel{ extit{difference of squares}}{(x-sqrt{5})(x+sqrt{5})}(x+7)= extit{original polynomial} \\\ (x^2-5)(x+7)=yimplies x^3+7x^2-5x-35=y[/latex]

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