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Giải: (1x + 9)/(2x + 7) > 0 — Detailed Solution | AhaStep

Home›Math›Giải: (1x + 9)/(2x + 7) > 0

📐 MathLevel 2 — 🟢 Basicinequality👁 18 views⏱ 1 min read

Giải: (1x + 9)/(2x + 7) > 0

📝 Problem

(1x + 9)/(2x + 7) > 0

✨Detailed Solution

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1

1. 📝 Nhận dạng: Bất phương trình phân thức: (x + 9) / (2x + 7) > 0

2

2. 📊 Nghiệm tử & mẫu: Tử = 0: x = -9

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Mẫu = 0 (loại): x = -7/2

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3. 📋 Bảng xét dấu: Bảng xét dấu:

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Solve: Maximize z = 8x + 3y subject to: x + y ≤ 6, x …