Question

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

Answer 1

Answer:

let's do it by factor theorem,

7+3x=0

3x=-7

x=-7/3

now,

3(-7/3)³+7(-7/3)

3(-343/27)-49/3

-1029/27-49/3

-1029-441/27

-588/27

no it's not a factor of 3x³+7x.

Answer 2

I think you understand

Ok