Question

Qual valor de 3ײ-5×+1=0

Answer 1

delta = b²-4ac
delta= (-5)²-4.3.1
delta=25-4.3.1
delta=13
x=-b+-√delta/2a
x=-(-5)+-√13/2.3
x=5+-√13/6
x=5+3,6/6
x'=8+3,6 = 11,6
x''=8-3,6=4,4