What is the value of b2 – 4ac for the following equation? 2×2 – 2x – 1 = 0 -4 12 0

Question

What is the value of b2 – 4ac for the following equation? 2×2 – 2x – 1 = 0 -4 12 0

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Thu Thủy 5 years 2021-08-15T18:21:39+00:00 1 Answers 24 views 0

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  1. sori
    0
    2021-08-15T18:23:28+00:00
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    Answer:

    I think you mean the equation is

    2 {x}^{2} - 2x - 1 = 0

    And you must find

    delta = {b}^{2} - 4ac = 4 + 8 = 12

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