Question

Por Favor me ajudem nessa questão '?

Answer 1

1...1...1...0
4..-1..-5..-6
2...1...2..-3

D = 
1...1...1
4..-1..-5
2...1...2

D = -2-10+4+2-8+5
D = -9

Dx = 
0...1...1
-6.-1.-5
-3...1..2

Dx = 0+15-6-3+12+0
Dx = 18

Dy = 
1...0...1
4..-6..-5
2..-3...2

Dy = -12+0-12+12+0-15
Dy = -27

Dz = 
1...1...0
4..-1..-6
2...1..-3

Dz = 3-12+0+0+12+6
Dz = 9

x = Dx/D --> x = 18/-9 --> x = -2
y = Dy/D --> y = -27/-9 --> y = 3
z = Dz/D --> z = 9/-9 --> z = -1

S: {-2, 3, -1}