Question

1) Calcular o valor das expressões algébricas
para x = 3 e y = 2:
a
a) 2x - y =
b) 3x + 2y =
c) 4x - 3y - 4 =
) 2xy - x =
3xy - y =
Xy - X-y =​

Answer 1

Resposta:

a)2x-y

2×3-2

6-2=4

b)3x+2y=

3×3+2×2

9+4=13

c)4x-3y-4=

4×3-3×2-4

12-6-4=2

d)2xy-x=

2×3×2-3

12-3=9

e)3xy-y=

3×3×2-2

18-2=16

f)xy-x-y=

3×2-3-2

6-3-2=1