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અહી $A=\left(\begin{array}{cc}4 & -2 \\ \alpha & \beta\end{array}\right)$ છે. જો $A ^{2}+\gamma A +18 I = O$ હોય તો $\operatorname{det}( A )$ ની કિમંત મેળવો.
જો $\Delta = \left| {\,\begin{array}{*{20}{c}}a&b&c\\x&y&z\\p&q&r\end{array}\,} \right|$, તો $\left| {\,\begin{array}{*{20}{c}}{ka}&{kb}&{kc}\\{kx}&{ky}&{kz}\\{kp}&{kq}&{kr}\end{array}\,} \right|$=