Question

resolva delta para mim só essa

Answer 1

delta= b2-4ac
delta=25-16
delta=9

Answer 2

-2x² + 5x -2 = 0 

Δ = 25 - 16 
Δ = 9 

x = -5 +-√9/-4
x = -5 +-3/-4

x' = -5+3/-4
x' = -2/-4 = 1/2 

x'' = -5-3/-4
x'' = -8/-4 = 2                    ok