5 A student is looking for factors of the polynomial \(\mathrm { f } ( x )\)
They suggest that \(( x - 2 )\) is a factor of \(\mathrm { f } ( x )\)
The method they use to check this suggestion is to calculate \(\mathrm { f } ( - 2 )\)
They correctly calculate that \(\mathrm { f } ( - 2 ) = 0\)
They conclude that their suggestion is correct.
5
- Make one comment about the student's method.
[0pt]
[1 mark]
5 - Make two comments about the student's conclusion.
1 \(\_\_\_\_\)
2 \(\_\_\_\_\)