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X²+3x+1=(x-2) ²

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X²+3x+1=(x-2) ²

    • Posted by Medashisha Lyngdoh 8 months, 2 weeks ago

    CBSE > Class 10 > Mathematics
    • 4 answers

    D.Manoj Kumar 8 months, 2 weeks ago

    It is not a Quadratic equation but then the value of 'x'will be 3/7

    1Thank You

    Khushpreet Kaur 8 months, 2 weeks ago

    2 + 3 x + 1 = ( x − 2 ) 2 x 2 + 3 x + 1 = x 2 − 4 x + 4 ⇒ x 2 + 3 x + 1 − x 2 + 4 x − 4 = 0 ⇒ 7 x − 3 = 0 has its highest power of variable as 1 Hence it is not a quadratic equation

    1Thank You

    Khushpreet Kaur 8 months, 2 weeks ago

    by using identity (a-b)²=a²-2ab+b² =X²–2(x)(2)+2² =x²–4x+4=x²+3x+1 By applying hit and trial method (1)²-4(1)+4=0 0=0 x-1 is zero of polynomial

    1Thank You

    Khushpreet Kaur 8 months, 2 weeks ago

    by using identity (a-b)²=a²-2ab+b² =X²–2(x)(2)+2² =x²–4x+4 By splitting the mid term =x²-2x-2x+4 =x(x-2)-2(x-2) (x-2)(x-2)=

    0Thank You

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