Question

qual a raíz de x2-14+48=0

Answer 1

Δ = 196 - 192
Δ = 4

x = 14 +-√4/2
x = 14 +-2/2

x' = 14+2/2
x' = 16/2 = 8

x'' = 14-2/2
x'' = 12/2 = 6                S = { 6 , 8 }           ok

Answer 2

∆= -14²-4.1.48 ∆=196 -4. 48 ∆=196-192 ∆=4 x=(-b+-√∆)/2 x= - (-14) +- √4/2 x= (14+-2)/2 x'= 16/2 x'= 8 x"=12/2 x"=6 S={ 6, 8 }