Question

aplicando a regras de sarrus calcule os determinantes

Answer 1

x.4.2 + 5.1.2 + x .0.1 -x.4.2 - x.1.1 - 5.0.2 =

8x + 10+0 -9x - 0 =

x=10

b) 3.2.(-5)+ 5.3.5+3.8.1 -3.2.5 -3.3.1 - 5.8.(-5) =

- 30+75+24-30-9+200=

299-69 =

230