Question

dada a funcao quadratica f (x) = x² - 5x 4 qual as raizes dessa funçao

Answer 1

Tem q fazer bhaskara
Δ= b² -4ac
Δ= (-5)²- 4(1)(4)
Δ= 25 -16
Δ= 9

x= -b +- √Δ/2a
x= 5+- 3/ 2

x'= 5+3/2=4
x''= 5-3/2= 1 
as raízes são (4,0) e (1,0)