Chapter 4 - Roots of polynomials

if α and β are roots of the equation ax² + bx + c = 0 what is α + β

-b/a

if α and β are roots of the equation ax² + bx + c = 0 what is αβ

c/a

if α,β and γ are roots of the equation ax³ + bx² + cx + d = 0 what is α + β + γ

-b/a

if α,β and γ are roots of the equation ax³ + bx² + cx + d = 0 what is αβ + βγ + γα

c/a

if α,β and γ are roots of the equation ax³ + bx² + cx + d = 0 what is αβγ

-d/a

if α,β,γ and δ are roots of the equation ax^4 + bx³ + cx² + dx + e = 0 what is α+β+γ+δ

-b/a

if α,β,γ and δ are roots of the equation ax^4 + bx³ + cx² + dx + e = 0 what is

c/a

if α,β,γ and δ are roots of the equation ax^4 + bx³ + cx² + dx + e = 0 what is

-d/a

if α,β,γ and δ are roots of the equation ax^4 + bx³ + cx² + dx + e = 0 what is

e/a

-b/a

c/a

-d/a