Question

check whether 7+3x is a factor of 3x³+7x​

Answer 1

Step-by-step explanation:

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..

Answer 2

$\Huge\rm\red{Answer}$

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.

• I Hope it's Helpful My Friend.