Question

Me ajudem pfv
1- calcule e efetui, o valor das expressões numericas
obs: Lembrar da regra de sinais e potencia
A) 5-{+3-[(+2)²+6-4]}=

B)15-{-3+[(5-6)².(9-8)²+1]}=

C)18-{6-[-3-(5-4)-(7-9)³]-1}=

D)-2+{-5[-2-2³-3-3(3-2)⁹]+5}=

Answer 1

Olá,
A) 5-{+3-[(+2)²+6-4]}=
5-{+3-[(4+6-4]}=
5-{+3-6}=
5-{-3}=
5+3=
8

B)15-{-3+[(5-6)².(9-8)²+1]}=
15-{-3+[(-1)².(1)²+1]}=
15-{-3+[1.1+1]}=
15-{-3+[1+1]}=
15-{-3+[2]}=
15-{-1}=
15+1=
16

C)18-{6-[-3-(5-4)-(7-9)³]-1}=
18-{6-[-3-(1)-(-2)³]-1}=
18-{6-[-3-(1)-(-8)]-1}=
18-{6-[-4+8]-1}=
18-{6-[4]-1}=
18-{1}=
17

D)-2+{-5[-2-2³-3-3(3-2)⁹]+5}=
-2+{-5[-2-2³-3-3(1)⁹]+5}=
-2+{-5[-2-2³-3-3(1)]+5}=
-2+{-5[-2-8-3-3]+5}=
-2+{-5[-16]+5}=
-2+{-16}=
-18