Ptr.forma generala ax^2 + bx + c = 0 x1+x2= -b/a , iar x1*x2 = c/a
In cazul de fata : x1+x2= 3/1 = 3, iar x1*x2 = m/1 = m
a) x1*x2 = 5 => m = 5
b) x1^2 + x2^2 = (x1 + x2)^2 - 2x1x2 = 5 => 3^2 - 2m = 5 => 2m = 4 , m=2
c) x1^3 x2^3 = (x1 + x2)^3 - 3x1x2(x1 + x2) = 9 => 3^3 - 3m*3 = 9 , -9m = 0 , m= 0
