Question

determine as raízes da função quadratica f (x)=x2-4x+3

Answer 1

Δ= (-4)²-4.1.3

Δ= 16-12=4

x= -(-4)+-√4/2.1

x= 4+-2/2

x1= 4+2/2=3

x2=4-2/2= 1

As raízes são 1 e 3.