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anonymous
 one year ago
Which of the following is a polynomial with roots 4, 6, and −7?
anonymous
 one year ago
Which of the following is a polynomial with roots 4, 6, and −7?

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taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1All you have to do is plug in each of the numbers for each equation if it equals zero it is a root

radar
 one year ago
Best ResponseYou've already chosen the best response.2If you want the solution, work this out: Do the multiplication. (x4)(x6)(x+7)

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1^^ that way is a lot easier both ways work though

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0multiply those three and thats the answer ?

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1If you expand it it will be your answer

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0wow thank you so much

radar
 one year ago
Best ResponseYou've already chosen the best response.2Yes:dw:1438394938481:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0is it x^324x^246x+168

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1I got x^3+7x^256x+168

mathmate
 one year ago
Best ResponseYou've already chosen the best response.0The easiest way is to use the fact that the product of the three roots equals the negative of the constant term. So (4)(6)(7)=168. So look for the polynomial with (168)=168 as the constant term.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0As mathmate said, for a cubic equation \[ax^3+bx^2+cx+d\] having roots \[\alpha,\beta,\gamma\] Use the following relation to quickly find the correct polynomial \[\alpha \times \beta \times \gamma = \frac{d}{a}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0When a=1, that is the coefficient of the cubic term, then it's simply equal to the negative of the constant term
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