Question

3.
Check whether 7 + 3x is a factor of 3x3 + 7x.​

Answer 1

Answer:

7 + 3x = 0

x = -7/3

put the valu of x in

3x3 + 7x

3* -7/3 *3 + 7*-7/3

-21 - 14/3

(-62 -14 )/3

-76/3

Answer 2

7+3x is not a factor of 3x^3+7x.

Here's the solution.

Hope it helps you.