document.write( "Question 623909: Witch polynomial has (x+4) as a factor \n" ); document.write( "
\n" ); document.write( "Hi\n" ); document.write( "polynomial f(x) with (x+4) as a factor ⇒ f(-4) = 0\n" ); document.write( "The factor theorem states that a polynomial f(x) has a factor (x − k) if and only if f(k) = 0.