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katovenus [111]
2 years ago
7

X²+x-6=0hãy tìm giá trị của x trong câu trên

Mathematics
1 answer:
Gennadij [26K]2 years ago
6 0

Tìm giá trị của x :

  • {x}^{2}  + x  -  6 = 0

  • x {}^{2}  + 3x - 2x  - 6 = 0

  • x(x + 3) - 2(x + 3) = 0

  • (x + 3)(x - 2) = 0

Bây giờ, có hai trường hợp :

Trường hợp 1. khi nào x + 3 = 0

  • x = -3

Trường hợp 2. khi nào x - 2 = 0

  • x = 2

Tôi hy vọng nó đã giúp !

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