Question

solve the differential equation
(i) (x+y)^2 dy/dx=a^2
(put x+y=z)

Answer 1

expand, and let z = y/x

Answer 2

okay can u do it for me to understand it very well

Answer 3

(x+y)^2 = x^2 + y^2 + 2xy

divide both sides by x^2
[1 + (y/x)^2 + 2(y/x)] (dy/dx) = a^2/x^2

z = y/x,

Answer 4

okay then what i have to do ??