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GeoGraphyHoidap247
4 tháng trước

Giải pt sau bằng công thức nghiệm tổng quát: `2x^2 - 3x + 5 = 0`

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Trần Quang Minh
4 tháng trước

Đáp án:

Phương trình vô nghiệm

Giải thích các bước giải:

`2x²-3x+5=0`

Có `Δ=(-3)²-4.2.5=-31<0`

⇒ Phương trình vô nghiệm

ngock9cute
4 tháng trước

gửi ạ

 

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