Question

Check whether 7+3x is a factor of 3x3 +7x
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Answer 1

Answer:

it is not

Step-by-step explanation:

7+3x=0

x=-7/3

putting value in polynomial,

(3*-7/3)^3+(7*-7/3)

(-7)^3+(-49/3)

-343-49/3

this is not equal to 0.

therefore it is not a polynomial