Vieta: sum and product of roots (α+β = −b/a, αβ = c/a)

jee-advancedjee-main

α+β = −b/a, αβ = c/a

What each symbol means

Symbol	What it stands for
a,b,c	Coefficients, a≠0
α,β	Roots of ax²+bx+c=0

When to use this

Standard quadratic with a≠0.