Question

Given a polynomial f(x), if (x + 7) is a factor, what else must be true? f(0)=7 f(0)=-7 f(7)=0 f(-7)=0

Answer 1

F(-7)=0  

Because that makes the (x+7) factor equal zero and any other factor multiplied by zero also results in zero.

Answer 2

Answer:

f(-7)=0 that is option 4th is correct.

Step-by-step explanation:

If we have given any polynomial  then its factor means that value is giving zero of that polynomial

And opposite sign of factor is the zero of the polynomial

For example:

x+a is factor of any polynomial f(x) then f(-a)=0

Similarly, If x+7 is a factor of any polynomial then f(-7)=0

Hence, option 4th is correct.