A polynomial function has zeros at x = 5, x=5/3, x= 2/5 and x = 7 and a leading coefficient of -5. Write the polynomial function in factored form.

Respuesta :

Answer:

The polynomial function in the factored form is P(x) = -5 ( x - 5) (x -  [tex]\frac{5}{3}[/tex] ) ( x - [tex]\frac{2}{5}[/tex] ) (x - 7)

Step-by-step explanation:

Let P(x) be a polynomial

As given, zeroes of the polynomial are at x = 5 ,x = [tex]\frac{5}{3}[/tex],  x = [tex]\frac{2}{5}[/tex] , x = 7

So , the factors of the polynomial for the root x = 5  is  ( x - 5)

the factors of the polynomial for the root x = [tex]\frac{5}{3}[/tex] is(x -  [tex]\frac{5}{3}[/tex] )

the factors of the polynomial for the root x = [tex]\frac{2}{5}[/tex]   is( x - [tex]\frac{2}{5}[/tex] )

the factors of the polynomial for the root x = 7 is(x - 7)

Also leading coefficient is of -5

⇒ P(x) = -5 ( x - 5) (x -  [tex]\frac{5}{3}[/tex] ) ( x - [tex]\frac{2}{5}[/tex] ) (x - 7)

∴ we get,

The polynomial function in the factored form is P(x) = -5 ( x - 5) (x -  [tex]\frac{5}{3}[/tex] ) ( x - [tex]\frac{2}{5}[/tex] ) (x - 7)