Question

Gente, me ajudem a fazer

X² + 3x + 2 = 0
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Answer 1

Resposta:

1. A= 1 B= 3 C= 2

• Δ = b^2 – 4ac
• Δ=3^2 – 4.1.2
• Δ= 9 – 8
• Δ=1

x = – b ± √Δ

2·a

x = – 3 ± √1

2.1

x = –3 ± 1

2

x1 = –3 – 1 = –4 = –2

2 2

×2 = –3+1 = –2 = –1

2 2