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Find a cubic function with the given zeros. Square root of 6, - Square root of 6, -3

2 Answers

6 votes
because these are roots of cubic function so just multiplie
(x-sqrt6)(x+sqrt6)(x+3) = ? and will get the right cubic function easy
User Brujoand
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2 votes

Answer: The cubic function will be


x^3+3x^2-6x-18

Explanation:

Since we have given that

the roots are


√(6),-√(6),-3

Since it has three roots , so it is a cubic function.

The cubic function is given by


(x-√(6))(x+√(6))(x-(-3))\\\\=(x^2-(√(6))^2)(x+3)\\\\=(x^2-6)(x+3)\\\\=x^2(x+3)-6(x+3)\\\\=x^3+3x^2-6x-18

So, the cubic function will be


x^3+3x^2-6x-18

User Adib
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8.1k points