`(148)/(x)+(231)/(y)=(527)/(xy),(231)/(x)+(148)/(y)=(610)/(xy)`

(xy)/(x+y)=(6)/(5)(xy)/(y-x)=6

(xy)/(x+y)=6/5 ; (xy)/(y-x)=6

(dy)/(dx)=(xy+y)/(xy+x)

(dy)/(dx)+(xy+y)/(xy+x)=0

The average of the reciprocals of x and y is (a) ((x+y))/((x-y)) (b) ((x+y))/(2xy) (c) (2(x+y))/(xy) (d) (2xy)/((x+y))

(xy)/(x-y)=(1)/(2);(xy)/(x+y)=(1)/(5) wherex +y!=0;x-y!=0

sin(xy) + (x)/(y) = x^(2) - y

The factors of x^(3)-x^(2)y-xy^(2)+y^(3) are (a (x+y)(x^(2)-xy+y^(2))(b)(x+y)(x^(2)+xy+y^(2))(c)(x+y)^(2)(x-y)(d)(x-y)^(2)(x+y)

Solve for x and y:(xy)/(x+y)=(1)/(5),x+y!=0;(xy)/(x-y)=(1)/(7),x-y!=0

The quotient of x by y added to the product of x and y is written as (x)/(y)+xy(b)(y)/(x)+xy(c)(xy+x)/(y) (d) (xy+y)/(x)