I.3x3-22x+40=0

    II. 5y2-21y+16=0

  • x>y
  • x
  • x≥y
  • x≤y
  • Relationship between x and y cannot be determined
  • Explanation:

    I. 3x3-22x+40=0

    ⇒ 3x3-12x-10x+40=0

    ⇒ 3x(x-4)-10(x-4)=0

    ⇒ (x-4)(3x-10)=

    ⇒ x=10/3,4

    II. 5y2-21y+16=0

    ⇒ 5y2-16y-5y+16=0

    ⇒ y(5y-16)-1(5y-16)=0

    ⇒ (5y-16)(y-1)=0

    ⇒ y=1,16/5

    x>y

I.3x3-22x+40=0 II. 5y2-21y+16=0  
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