Question

check whether 7+3x is a factor of 3x³+7x​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

7+3x = 0

3x = -7

x = -7/3

3(-7/3)³+7(-7/3)

3(-343/27)-49/3

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

-343-147/9

-490/9

Since,it's not zero ;it isn't a factor of 3x³+7x