-4
-3
-1
2
Correct answer is B
P = begin{pmatrix} y - 2 & y - 1 \\ y - 4 & y + 2 \end{pmatrix}
|P|=(y−2)(y+2)−(y−1)(y−4)=(y2−4)−(y2−5y+4)=−23
5y−8=−23⟹5y=−23+8=−15
y=−155=−3
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