Question

Ache os determinantes delta
A)5X²+3x+5=0
B)9X²-12×+4=0

Answer 1

a)∆=b^2-4×a×c
∆=3^2-4×5×5
∆=9-100
∆=-91

b)∆=12^2-4×9×4
∆=144-144
∆=0