Question

check whethee 7+3x is a factor of 3x³+7x.​

Answer 1

Answer:

if 7 +3x is a factor of 3x³+7x

Then, 7+3x=0

3x=-7

x=-7/3

Putting the value of x in 3x³+7x

3(-7/3)³+7(-7/3)

3(-343/27) - 49/3

-343/9 - 49/3

-343-147/9

490/9

Since it is not equals to 0. Therefore 7+3x is not the factor of the given polynomial.

Hope it helps you!