Question

aplicando a regra de sarrus, calcule 120 144 180

Answer 1

a)

|3 2 -1| 3 2

|5 0 4| 5 0

|2 -3 1| 2 -3

d = 16 + 15 - 10 + 36

d = 57

.

.

b)

|2 1 -2| 2 1

|3 -1 0| 3 -1

|4 1 -3| 4 1

d = 6 - 6 + 9 - 8

d = 1

.

.

d)

|3 5 -1 | 3 5

|0 4 2 | 0 4

|0 0 -2| 0 0

d = -24

.

.

e)

|3 0 8| 3 0

|0 7 7| 0 7

|4 9 0| 4 9

d = -189 - 224

d = -413

.

.

f)

|0 0 5| 0 0

|8 10 3| 8 10

|0 7 4| 0 4

d = 160