Mathematics - Parabola Question with Solution | TestHub

$m_1,m_2,m_3$ are the slope of normals $\left(m_1<m_2<m_3\right)$ drawn through the point ( $9,-6$ ) to the parabola $y^2=4x.A=\left[a_{ij}\right]$ is a square matrix of order 3 such that $a_{ij}=1$ if $i\ne j$ and $a_{ij}=m_i$ if $i=j$. Then $\det \mathrm{A}=$