The normal vector of a plane is given by the coefficients of x, y, and z in the equation of the plane. So, for the plane $2x+5y-3z=0$, the normal vector is $\mathbf{n}_1 = (2,5,-3)$. Similarly, for the plane $-x+5y+2z=8$, the normal vector is $\mathbf{n}_2 =
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