I. 2x2+23+63=0

    II. 4y2+19y+21=0

  • If x < y
  • If x > y
  • If x ≥ y
  • If x ≥ y
  • If relationship between x and y cannot be established
  • Explanation:

    I. 2x2+23+63=0

    2x2+14x+9x+63 = 0

    2x(x+7)+9(x+7) = 0

    (x+7)(2x+9)=0

    x=-7 or -9/2

    II. 4y2+19y+21=0

    4y2+12y+7y+21=0

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

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

    y=-3 or -7/4 ⇒ y>x


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I. 2x2+23+63=0 II. 4y2+19y+21=0
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