Question

Calcule o valor numérico das expressões​

Answer 1

Resposta:

a. x-y=5-(-4)

5+4=9

b.3x+a

3×2+6

6+6=12

c.x+y

1/2+(-1/5)

5-2/10=3/10

d.(-3)^2-2×5

9-10=-1

e.3×(-2)^2-(-7)^2

3×4+49

12+49=61