Question 48

Jambmaths question: 

If $P=\left( \begin{matrix}   1 & 3 & 2  \\   4 & 5 & -1  \\   -3 & 2 & 0  \\\end{matrix} \right)$find the determinant of matrix P

Option A: 

–75

Option B: 

–57

Option C: 

57

Option D: 

75

Jamb Maths Solution: 

$\left| P \right|=\left| \begin{matrix}   1 & 3 & 2  \\   4 & 5 & -1  \\   -3 & 2 & 0  \\\end{matrix} \right|=1(0+2)-3(0-3)+2(8+15)=2+9+46=57$

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