Quadratic Inequalities


    Solving Quadratic Inequalities

    Question
    x 2 + 7 x + 6 ≥ 0

    Answer x ≤ − 6 , x ≥ − 1



    Question
    x 2 + 7 x + 10 > 0

    Answer x < − 5 , x > − 2



    Question
    x 2 + 6 x + 5 > 0

    Answer x < − 5 , x > − 1



    Question
    x 2 + 7 x + 12 ≤ 0

    Answer − 4 ≤ x ≤ − 3



    Question
    x 2 − 15 x + 50 ≥ 0

    Answer x ≤ 5 , x ≥ 10



    Question
    x 2 − 14 x + 45 < 0

    Answer 5 < x < 9



    Question
    x 2 − 9 x − 10 > 0

    Answer x < − 1 , x > 10



    Question
    x 2 + 4 x − 32 > 0

    Answer x < − 8 , x > 4



    Question
    x 2 + 5 x − 14 < 0

    Answer − 7 < x < 2



    Question
    x 2 − 81 < 0

    Answer − 9 < x < 9



    Question
    x 2 − 3 x − 28 > 0

    Answer x < − 4 , x > 7



    Question
    x 2 − 12 x + 27 > 0

    Answer x < 3 , x > 9



    Question
    x 2 + 8 x < 33

    Answer − 11 < x < 3



    Question
    x 2 + 14 x + 24 ≥ 0

    Answer x ≤ − 12 , x ≥ − 2



    Question
    x 2 < 7 x + 18

    Answer − 2 < x < 9



    Question
    x 2 + 12 x + 32 ≥ 0

    Answer x ≤ − 8 , x ≥ − 4



12th October 2019

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