check whether 7 + 3 X is a factor of 3 x cube + 7 x
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7+3x=0
x=-7/3
p(x)=3x3+7x
p(-7/3)=3(-7/3)3+7(-7/3)
=3(-343/27)-49/3
=-343/9-49/3
=(-343-147)/9
=-480/9. Or
=-53.333......
x=-7/3
p(x)=3x3+7x
p(-7/3)=3(-7/3)3+7(-7/3)
=3(-343/27)-49/3
=-343/9-49/3
=(-343-147)/9
=-480/9. Or
=-53.333......
tictac1:
And therefore 7+3x is not the factor of p(x)
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