Question

1) Calcule as raízes das seguintes funções:
a) y = 2x -5x + 3​

Answer 1

2x² -5x +3 = 0

∆= (-5)² -4.2.3 = 25 -24= 1 => √∆=1

x = -b±√∆/2a

x = 5±1/2.2

x' = 5+1/4 =6/4 = 3/2 ✓

x" = 5-1/4 = 4/5= 1 ✓