hopsonjackie7893 hopsonjackie7893
  • 21-10-2019
  • Mathematics
contestada

Consider the polynomial functionP(x)=x³-8x²-29x+180.Verify that P(9) = 0. Since P(9) =0, what must one of the factors of P be?

Respuesta :

isyllus
isyllus isyllus
  • 22-10-2019

Answer:

One Factor: x-9

Step-by-step explanation:

The polynomial function, P(x)=x³-8x²-29x+180

To verify: P(9)=0

Put x=9 into polynomial

[tex]P(9)=9^3-8\cdot 9^2-29\cdot 9+180[/tex]

[tex]P(9)=0[/tex]

At x=9, P(9)=0

Therefore, x-9 must be factor of P(x).

when divide x³-8x²-29x+180  by x-9 get remainder 0

[tex](x^3-8x^2-29x+180)\div (x-9)[/tex]

[tex]\Rightarrow x^2+x-20[/tex]

Factor quadratic equation

[tex]\Rightarrow (x+5)(x-4)[/tex]

Three factors are (x+5), (x-4) and (x-9)

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