Seudónimo Seudónimo

26-04-2020
Mathematics

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help please! I must solve using descartes law of signs or rational root theorem. show all steps please thanks!

help please I must solve using descartes law of signs or rational root theorem show all steps please thanks class=

Respuesta :

LadishCat LadishCat

26-04-2020

Answer:

x=2 or x=3

Step-by-step explanation:

x^4 - 5x^3 + 7x^2 - 5x + 6 = 0

Step 1=Factor left side of equation.

(x-2) (x-3) (x^2 + 1) = 0

Step 2=Set factors equal to 0.

x-2 = 0 or x-3 = 0 or x^2 + 1 = 0.

Answer:x=2 or x=3

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