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May 1, 2021 @ 4:36pm 
a = 1, b = 12 e c = – 13

Δ = b2 – 4ac

Δ = 122 – 4·1·(– 13)

Δ = 144 + 52

Δ = 196
Feb 16, 2021 @ 3:13pm 
hola
Feb 15, 2021 @ 12:24pm 
zika virus po