Question

5×2+4×+1=0


ME Ajundem Pfvr

Answer 1

5x² +4x -1 

Δ= b² -4ac

Δ= 4² -4.5.(-1)

Δ= 16 + 20

Δ= 36

x= -b +/- √Δ / 2a

x= -4 +/- √36 / 2.5

x'= -4 +6 / 10

x'= 2 / 10 (simplificando por 2)

x'= 1/5

x''= -4 -6 / 10

x''= -10 / 10

x''= -1

Bons estudos!