Question

Resolve r matriz 3x3.por determinantes

Answer 1

DetA = 2.2.1 + 3.4.0 + 1.1.5 – 0.2.1 – 5.4.2 – 1.1.3

DetA = 4 + 0 + 5 – 0 – 40 – 3

DetA = -34


acho que e assim