sydneicaro2004 sydneicaro2004
  • 30-01-2020
  • Mathematics
contestada

Write a polynomial function f of least degree that has rational coefficients,a leading coefficient of 1, and the given zeros

Write a polynomial function f of least degree that has rational coefficientsa leading coefficient of 1 and the given zeros class=

Respuesta :

shilpa85475 shilpa85475
  • 05-02-2020

[tex]f(x)=x^2-(2+\sqrt 3)x+2\sqrt3[/tex]

Solution:

Given zeros are [tex]2,\sqrt 3[/tex].

If a is zero of f(x), then (x – a) is a factor of f(x).

So, [tex](x-2)[/tex] and [tex](x-\sqrt 3)[/tex] are factors of f(x).

On multiplying factors, we get the polynomial function.

[tex](x-2)(x-\sqrt 3)=x^2-2x-\sqrt 3x+2\sqrt3[/tex]

Combine like terms together.

[tex](x-2)(x-\sqrt 3)=x^2-(2+\sqrt 3)x+2\sqrt3[/tex]

Degree of the polynomial is 2.

A leading coefficient is 1.

Hence the polynomial [tex]f(x)=x^2-(2+\sqrt 3)x+2\sqrt3[/tex].

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