Question

1. Simplifique e resolva as expressões para x = 2, y = 3 e z = 4.

a. 4x + 3y – 2x + y

b. 5y – 2x + z – 3y + x + 4y – 5x

c. x + 3z – x +

2

- z + 2y

d. 2x (x + 3) + 3y (

2 + 2

3 + 2) + 2z

e. 3x (

2 + x + 4) + 2z (z + 3z + 2) +

2​

Answer 1

a. 4x + 3y - 2x + y

=4(2)+3(3)-2(2)+3

=8+9-4+3

=16

b. 5y - 2x + 2 - 3y + x + 4y - 5x

=5(3)-2(2)+2-3(3)+2+4(3)-5(2)

=15-4+2-9+2+12-10

=8

c. x + 3z - x + 2

=2+3(4)-2+2

=2+12-2+2

=14