Question

3x-8x-3=0 respondam ae as contas de delta

Answer 1

Δ = b²-4ac
Δ = (-8)²-4.1.(-3)
Δ = 64+12
Δ = 76

x1,2 = -b+-√Δ/2a
x1,2 = -(-8)+-√76
                2.1

x1,2 = 8+-2√19  ⇒ x1 = 4-√19
                2           x2= 4+√19

S={4-√19, 4+√19}