Roots of Polynomials (Edexcel A-Level Further Mathematics): Flashcards

Values that satisfy $f(x) = 0$

$S_1 = -\frac{a_{n-1}}{a_n}$

$S_2 = \frac{a_{n-2}}{a_n}$

$P = (-1)^n \frac{a_0}{a_n}$

$-\frac{b}{a}$

$\frac{c}{a}$

$-\frac{d}{a}$

$S_1^2 - 2S_2$

$\frac{S_2}{P}$

$c^3 + S_1c^2 + S_2c + P$