KimberllyKethley 13/04/2020 1) a = 4, b = 8, c = 6.Δ = 8² – 4.4.6Δ = 64 – 96Δ = – 322) a = 1, b = – 4, c = – 5.Δ = (– 4)² – 4.1.(– 5)Δ = 16 + 20Δ = 36x = – (– 4) ± √36 2.1x = 4 ± 6 2x' = 10 = 5 2x'' = – 2 = – 1 23)
KimberllyKethley
1) a = 4, b = 8, c = 6.
Δ = 8² – 4.4.6
Δ = 64 – 96
Δ = – 32
2) a = 1, b = – 4, c = – 5.
Δ = (– 4)² – 4.1.(– 5)
Δ = 16 + 20
Δ = 36x = – (– 4) ± √36
2.1
x = 4 ± 6
2
x' = 10 = 5
2
x'' = – 2 = – 1
2
3)