How is the degree of a polynomial determined?
The x-intercepts (where the curve crosses or touches the x-axis).
By the highest power of the variable.
When substituting negative numbers into a polynomial, you should always use brackets to avoid accuracy errors.
For a cubic f(x)f(x)f(x), if x=ax=ax=a is the only root that results in f(x)=0f(x)=0f(x)=0, the curve will cross the x-axis once.
Flashcards for Edexcel A Level Maths 7.3 The Factor Theorem, covering the key formulae, methods and definitions you need to recall for Paper 1, Paper 2 and Paper 3. 20 cards, matched to the Edexcel A Level Maths (9MA0) specification. Recall questions account for roughly 50% of marks at A Level Maths, so these target the marks you can secure before the paper starts.
