Solving Quadratics


    Solving Quadratics by Factorising

    Question
    x 2 + 6 x + 9 = 0

    Answer x = − 3 , x = − 3



    Question
    x 2 + 8 x + 15 = 0

    Answer x = − 5 , x = − 3



    Question
    x 2 + 12 x + 32 = 0

    Answer x = − 4 , x = − 8



    Question
    x 2 + 14 x + 48 = 0

    Answer x = − 8 , x = − 6



    Question
    x 2 − 11 x + 30 = 0

    Answer x = 6 , x = 5



    Question
    x 2 + 5 x − 14 = 0

    Answer x = − 7 , x = 2



    Question
    x 2 + 8 x − 20 = 0

    Answer x = − 10 , x = 2



    Question
    x 2 + 5 x − 36 = 0

    Answer x = − 9 , x = 4



    Question
    x 2 − 49 = 0

    Answer x = 7 , x = − 7



    Question
    x 2 − 81 = 0

    Answer x = 9 , x = − 9



    Question
    x 2 − 49 = 0

    Answer x = 7 , x = − 7



    Question
    x 2 − 8 x − 20 = 0

    Answer x = − 2 , x = 10



    Question
    x 2 = 9 x + 36

    Answer x = − 3 , x = 12



    Question
    x 2 = 7 x + 8

    Answer x = − 1 , x = 8



    Question
    x 2 + 5 x = 14

    Answer x = − 7 , x = 2



    Question
    x 2 − 1 = 0

    Answer x = 1 , x = − 1



8th October 2019

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