Determinan matriks R=( 0 1 4 -5 3 2. 0 -1 -2)

det : (0)(3)(-2)+(1)(2)(0)+(4)(-5)(-1)-(1)(-5)(-2)-(0)(2)(-1)-(4)(3)(0)
= 0+0+(20)-(10)-0-0
=10

jadi jawabannya yaitu 10.