I. 3x2+16x+21=0

    II. 6y2+17y+12=0

  • If x ≤ y
  • Ifx ≥ y
  • If relationship between x and y can not be established
  • If x < y
  • If x > y
  • Explanation:

    I. 3x2+16x+21=0

    3x2+9x+7x+21=0

    3x(x+3)+7(x+3)=0

    (x+3)(3x+7)=0

    x=-3,-7/3

    II. 6y2+17y+12=0

    6y2+9y+8y+12=0

    3y(2y+3)+4(2y+3)=0

    (2y+3)(3y+4)=0

    y=-3/2,-4/3

    ∴ x < y

     


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I. 3x2+16x+21=0 II. 6y2+17y+12=0
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