Question

determine a raiz da função

Answer 1

x²-4x+3=0
x= 4±√(-4)²-4.1.3/2
x=4±√16-12/2
x=4±√4/2
x=4±2/2
x'=4+2/2= 6/2=3
x''=4-2/2=2/2=1
3 e 1