Question

calcule o valor das expressoes (a) (-4/3)2 - 1 = (b) 3/2 + (-1/2)2 -8 = (c) (1 - 1/2)2 + (-1 + 1/2)3 = (d) (1 + 1/2)2 - 1/4 =

Answer 1

A)

(-4/3).2-1=
(-1.3).2-1=
-2,6-1=
-3.6 (Aproximadamente)

B)
3/2+(-1/2)2-8=
1,5-0,5.2-8=
1,5-1-8=
1,5-9=
-7,5

C)
(1- 1/2)2+(-1+1/2)3=
(1-0,5).2+(-1+0,5).3=
0,5.2-0,5.3=
1-1.5=
-0,5

D)
(1+1/2)2-1/4=
(1+0,5).2-0.25=
1,5.2-0,25=
3-0,25=
2,75

Boa sorte, beijos!