Quadratic equation with root 1 is :-(A) 2x ^ 2 + x – 1 = 0 (B) 2x ^ 2 – x – 1 = 0 (C) 2x ^ 2 + x + 1 = 0 (D) 2x ^ 2 – x + 1 = 0​

Question

Quadratic equation with root 1 is :-(A) 2x ^ 2 + x – 1 = 0 (B) 2x ^ 2 – x – 1 = 0 (C) 2x ^ 2 + x + 1 = 0 (D) 2x ^ 2 – x + 1 = 0​

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Edana Edana 4 years 2021-08-02T13:38:51+00:00 1 Answers 18 views 0

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  1. Amity
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    2021-08-02T13:40:11+00:00
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    Answer:

    option b is correct

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )