Quadratic equation: Part-3
5) Relation between roots and coefficients of Quadratic equation:
Let α and β be two roots of quadratic equation then:
α + β= -b/a (α .β)= c/a
Question : If α and β are roots of x2 +5x -1 = 0 find α3 + β3
solution: As by comparing with Standard form a= 1 b= 5 c= -1
α + β =-5 α .β…