`(xy+2y)-(3xy-4y)`

If 1/x-1/y=4 then (2x+4xy-2y)/(x-y-2xy)=

Factorize the expressions and divide them as directed: 12xy(9x^2-16y^2):-4xy(3x+4y)

Given that x,y in R: solve (4x^(2)+3xy)+(2xy-3x^(2))iota=(4y^(2)-(x^(2))/(2))+(3xy-2y^(2))

x,y in R, solve :4x+3xy+(2xy-3x)i=4y-((x^(2))/(2))+(3xy-2y)i

Subtract the sum of 7x^(2) - 4y^(2) " and " 4x^(2) + 3xy - 4y^(2) from the sum of 5x^(2) - 3xy - y^(2) "and " x^(2) + 2xy - 2y^(2) .

Q. 11 The solution of (dy)/(dx)=(2x-y+3)/(x+2y+4) is y^(2)-x^(2)+xy+4y-3x+1=C x^(2)-y^(2)+xy+4y+3x-1=C y^(2)-x^(2)-xy-4y+3x-1=C y^(2)-x^(2)+xy+4y-3x-1=C

Show that : (5xy +3y)^2 - (5xy-3y)^2 = 60 xy^2 .

Solve for x and y:3x^(2)-5y^(2)=7,3xy-4y^(2)=2

12xy (9x ^ (2) -16y ^ (2)) -: 4xy (3x + 4y)