Find the general solution of (x+y+ 1) dx + (x – 3y – 7) dy = 0 x2 А. Зу? + 2ху + 2х 14y = C х? - Зу? 14y = C x2 + 3y? + 2xy + 2x - С. 14y = C х? - Зу? + 2ху - 2х- 14у %3D 2xy + 2x В. D. = C

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