Oi, bom dia!
Resposta:
a.) Δ = 4.
b.) Δ = 4.
c.) Δ = 4.
d.) Δ = 144.
e.) Δ = 64.
f.) Δ = 64.
Explicação passo-a-passo:
a.) x² – 4x + 3 = 0.
a = 1, b = – 4 e c = 3.
Δ = b² – 4 · a · c
Δ = (– 4)² – 4 · 1 · 3
Δ = 16 – 12
Δ = 4.
b.) x² – 12x + 35 = 0.
a = 1, b = – 12 e c = 35.
Δ = b² – 4 · a · c
Δ = (– 12)² – 4 · 1 · 35
Δ = 144 – 140
Δ = 4.
c.) x² + 4x + 3 = 0.
a = 1, b = 4 e c = 3.
Δ = b² – 4 · a · c
Δ = 4² – 4 · 1 · 3
Δ = 16 – 12
Δ = 4.
d.) x² – 4x – 32 = 0.
a = 1, b = – 4 e c = – 32.
Δ = b² – 4 · a · c
Δ = (– 4)² – 4 · 1 · (– 32)
Δ = 16 + 128
Δ = 144.
e.) x² – 10x + 9 = 0.
a = 1, b = – 10 e c = 9.
Δ = b² – 4 · a · c
Δ = (– 10)² – 4 · 1 · 9
Δ = 100 – 36
Δ = 64.
f.) x² + 14x + 33 = 0.
a = 1, b = 14 e c = 33.
Δ = b² – 4 · a · c
Δ = 14² – 4 · 1 · 33
Δ = 196 – 132
Δ = 64.
Espero ter te ajudado e bons estudos para você! ;)
