|=0 Calculate the determinant: =2(2⋅5−(−3)⋅p)−(−1)(1⋅5−(−3)⋅3)+1(1⋅p−2⋅3) Simplify each term: The first term: 2(10+3p)=20+6p The second term: −1(5+9)=−14 The third term: 1(p−6)=p−6 Combining these terms gives: 20+6p−14+p−6=0 Simplifying further: 20+6p−14+p−6=0⟹7p=−28⟹p=−4 Thus, the value of p is -4 .