I. 8x2+18x+9=0

    II. 4y2+19y+21=0

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

    I. 8x2+18x+9=0

    8x2+12x+6x+9=0

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

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

    x=-3/2,-3/4

    II. 4y2+19y+21=0

     4y2+12y+7y+21=0

    4y(y+3)+7(y+3)=0

    (y+3)(4y+7)=0

    y=-3,-7/4

    ∴  x > y

I. 8x2+18x+9=0 II. 4y2+19y+21=0
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