Question

check whether 7+3x is a factor of 3x²+7x​

Answer 1

Answer:

yes it is

Step-by-step explanation:

3x + 7 ÷ 3x^2 + 7x

so quotient = x

remainder = 0

Answer 2

Answer:

$\Huge\rm\red{Answer}$

7+3x=0

3x=-7

X=-7/3

Now put the value of x in the equation.

=3(-7/3)^3+7(-7/3)

=3(-343/27)-49/3

=-343/9-49/3

=-343/9-147/9

=-490/9

=54.44

Thus it is not a factor.