Question

Tolong caranya no.4 plisss

Answer 1

3) det A= ad x bc
           = (-5x1) - ((p-2)x(p+4))
           =-5 - (p²+2p-8)
           =-5-p²-2p+8 = -p²-2p+3

maaf y nmr 4 saya tidak mengerti...