s7harrycraycar s7harrycraycar

25-05-2016
Mathematics

Answered

What are the roots of the polynomial equation x^3-7x=6x-12?

A–6, 6
B–4, 1, 3
C–3, –1, 4
D1, 3

Verified Answer :

25-05-2016

Hello,

Answer B

P(x)=x^3-13x+12
P(1)=1-13+12=0 ==>1 is root
P(3)=3^3-133+12=0 ==>3 is root
P(-4)=(-4)^3-13(-4)+12=0 is root

P(x)=(x-1)(x-3)(x+4)

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camjai21 camjai21

02-11-2020

Answer:

b

Step-by-step explanation:

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