Question

1) Calcule:
a)(5+)(2−) =
b)(4−3)(−2+5) =
c)(1+)(2−)(3+2) =
d)(3+4)2 =

2)Dados: 1 =1+,2 =3+2e3 =6−4. calcule:
a)1 ∙2 =
b)2 ∙3 =
c)1 ∙3 =
d)1 ∙2 ∙3 =

Answer 1

Resposta:

1) a)(5+)(-2) = -10

b)(4−3)(−2+5) = 3

c)(+1)(-2)(3+2) = -10

d)(3+4)2 = 14