Find the general solution to $y^{(4)} - 7 y^{\,\prime\prime\prime} + 12 y^{\,\prime\prime} = 0$. In your answer, use $c_1, c_2, c_3$ and $c_4$ to denote arbitrary constants and $x$ the independent variable. Enter $c_1$ as c1, $c_2$ as c2, etc.

help (equations)