Question

Resolva as seguintes expressões numéricas:
a) (21 + 3) + (32 + 4 : 2) + (48 + 3) + 1 =
b) (36 + 2) + [25 - (22 + 4) +1] =
c) (32 + 25) + {42 + [17 + (28 + 12)] x 4}=
d) (42 + 27) – (21 – 2) + 5 =
e) (36 – 2) + [28 – (12 + 4) + 7] =
f) 5²+ √16 + √36=
g) √25 + √9 + 6² : 3²=
h) √49 - √4 + ( 4 + 3)² - 1=

Answer 1

Explicação passo-a-passo:

a) (21 + 3) + (32 + 4 : 2) + (48 + 3) + 1

$24 + (32 + 2) + 51 + 1 = \\ 24 +34 + 51 + 1 = \\ 58 + 52 = \\ 110$

b) (36 + 2) + [25 - (22 + 4) +1]

$38 + (25 -(26) + 1) = \\38 + 0 = \\ 38$

c) (32 + 25) + {42 + [17 + (28 + 12)] x 4}

$57 + (42 + (17 + 40) \times4) = \\ 57 + (4 2 + 57 \times 4) = \\ 57 + (42 + 228) = \\ 57 + 270 = \\ 327$

d) (42 + 27) – (21 – 2) + 5

$69 - 19 + 5 = \\ 50 + 5 = \\ 55$

e) (36 – 2) + [28 – (12 + 4) + 7]

$34 + (2 8 - 16 + 7) = \\ 34 + (12 + 7 )= \\ 34 + 19 = \\ 53$

f) 5²+ √16 + √36

$25 + 4 + 6 = \\ 35$

g) √25 + √9 + 6² : 3²

$5 + 3 + 36 + 9 = \\ 8 + 35 = \\ 43$

h) √49 - √4 + ( 4 + 3)² - 1

$7 - 2 + {7}^{2} - 1 = \\ 7 - 2 + 49 - 1 = \\ 5 + 48 = \\ 53$