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Ifx+y=8and xy=15then x²+y²

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Ifx+y=8and xy=15then x²+y²

    • Posted by Raghav Gurjar 9 months, 1 week ago

    CBSE > Class 09 > Mathematics
    • 3 answers

    Anurag Singh 9 months ago

    x+y=8 xy=15, using : (x+y)^2 = x^2 + y^2 +2(x)(y) , (8)^2 = x^2 + y^2 + 2(15) , 64 = x^2 + y^2 + 30, 64 - 30 = x^2 + y^2 , 34 = x^2 + y^2

    1Thank You

    Anshika Choudhary 9 months ago

    x+y=8 xy=15 using : (x+y)^2 = x^2 + y^2 +2(x)(y) (8)^2 = x^2 + y^2 + 2(15) 64 = x^2 + y^2 + 30 64 - 30 = x^2 + y^2 34 = x^2 + y^2

    1Thank You

    Anurag Singh 9 months, 1 week ago

    x+y=8 xy=15 using : (x+y)^2 = x^2 + y^2 +2(x)(y) (8)^2 = x^2 + y^2 + 2(15) 64 = x^2 + y^2 + 30 64 - 30 = x^2 + y^2 34 = x^2 + y^2

    4Thank You

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