Question

$\rm{Check \: whether \: 7 +3x \: is \: a \: factor \: of \: 3{x}^{3} + 7x.}$
$\huge\rm \red{Don't \: Spam \: plz}$
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Answer 1

Step-by-step explanation:

7 + 3x =0

3x = -7

x =-7/3

p(x) = p( -7/3 )

p( -7/3 ) = 3x³ + 7x =0

= 3 × (-7/3)³ + 7 × (-7/3) =0

= 3 × (-343/27) + (-49/3)=0

=: (-343/9) - 49/3

L .c..m of 9 and 3 = 3

= - 343/9 -147/9. =0

= - 490/9 = -54 ⁴/9 =0

7+3x is not factor of 3x³+7x

Hope its Helpful