Question

11. Check whether 7 + 3x is a factor of 3x^3 + 7x

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Answer 1

Step-by-step explanation:

7+3x=0

3x=-7

x=-7/3

Substitute value of x in given polynomial

3x³+7x

3[-7/3]³+7[-7/3]

-3×343/27-49/3

-343/9-49/3

-490/9

HERE THE REMAINDER IS NOT ZERO

THEREFORE 7+3X IS NOT FACTOR OF 3X³+7X