Q. A number x is formed by adding 1 to reciprocal of y. If y>0 ,then
a. xy^3
c. xy

• therefore,x=1+1/y
  xy3=(1+1/y)y3=y3+y2
  xy=(1+1/y)y=y+1
• 11 years agoHelpfull: Yes(17) No(2)
• A number x is formed by adding 1 to reciprocal of y:ie
  x=1+1/y
  x=(y+1)/y-----------------(1)
  so,xy=y+1
  and
  xy^3=x*y^3=(y+1)/y * y^3
  =(y+1) * y^2
  so,xy^3 =y^3 + y^2
• 11 years agoHelpfull: Yes(7) No(4)
• x=1+1/y
  x=(y+1)/y
  (xy)^3=(((y+1)/y)y)^3
  (xy)^3=(y+1)^3
  xy=1+y
• 10 years agoHelpfull: Yes(3) No(0)