Question

Check whether 7-3x is a factor of 3x^2+7x

Answer 1

7-3x=0

-3x=-7

X=7/3

P(X)=3x²+7x

P(7/3)=3(7/3)²+7(7/3)

3(49/9)+49/3

49/3+49/3

98/3

The answer is not zero that's why 7-3x is not a factor of3x²+7x

Hope it will help you