x`sqrt(1+y^2)dx-ysqrt(1+x^2)dy=0` solve using variable separable.

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You need to start separate the variables, hence, you need to move the negative member to the right side, such that:

`xsqrt(1 + y^2)dx = ysqrt(1+x^2)dy`

You need to divide by `sqrt(1 + y^2)` both sides, such that:

`xdx = (ysqrt(1+x^2)dy)/(sqrt(1 + y^2))`

You need to divide by `sqrt(1 + x^2)` both sides, such that:

`(xdx)/(sqrt(1 + x^2)) =...

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