Question

Sabe-se que x, e x sao as raizes da equaçao x2-5x+6=0 calcule o valor

Answer 1

x²-5x+6=0

a=1
b=-5
c=6

x=(-b+-√b²-4.a.c)/2.a

x=(-(-5+-√-5²-4.1.6)/2.1
x=(5+-√25-24)/2
x=(5+-√1)/2
x=(5+-1)/2

x1=(5+1)/2
x1=6/2
x1=3

x2=(5-1)/2
x2=4/2
x2=2

S={2;3}