Question

check whether 7 + 3 x is factor of f(x)=3x^3+7x​

Answer 1

no its not.

g(x)=7+3x

7+3x=0

3x=-7

x=-7/3

px=3x³+7x

p(-7/3)=3×-27/343+7×-7/3

calculate kar lo 0 ans nahi aayega islye ye factor nahi hai