Polynomial
Eg. 3x³+ 6x+ 8
Formulae
(a+b)²=a²+2ab+b²
(a-b)²=a² -2ab+b²
(a²-b²)= (a+b)(a-b)
(a+b+c)²=a²+b²+c²+2(ab+bc+ac)
(a+b)³=a³+b³+3ab(a+b)
(a-b)³=a³-b³-3ab(a-b)
(a³+b³)=(a+b)(a²+b²-ab)
(a³-b³)=(a-b)(a²+b²+ab)
Roots of Quadratic Equation
ax²+box+c=0
α=(-b+√b²-4ac)/2a
β=(-b-√b²-4ac)/2a
α+β=-b/a
α*β=c/a
Quadratic eq can also be written as
x²-(α+β)x+α*β