Show that x = -2 is a solution of 3x² + 13x + 14 = 0​

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Show that x = -2 is a solution of 3x² + 13x + 14 = 0​

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Yến Oanh 2 days 2021-07-21T22:43:12+00:00 1 Answers 0 views 0

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    2021-07-21T22:44:22+00:00

    Answer:

    x= -2 is correct answer

    Step-by-step explanation:

    3(-2×-2)+13(-2)+14=0

    3(4)+13(-2)+14=0

    12+(-26)+14=0

    12-26+14=0

    12+14-26=0

    26-26=0

    0=0

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