Question

Saber-se que a=1 ,b = 5 e c = 4 ,Qual o valor de x= -b+√b²-4ac
2a

Answer 1

x = -b+√b²-4.a.c/2a
x = -5+√5²-4.1.4/5.1
x = -5 + 25 -16 / 5
x = -5 + 25 - 3,2
x = 20 - 3,2 
x = 16,8