Question

9)calcule o valor das expressões
$a) 2^{3}.5+ 3^{2} b) 70^{0} + 0^{70} c)3. 7^{1}-4.5 ^{0} d) 3^{4}- 2^{4}:8-3.4 e) 5^{2}+3.2-4 f)5. 2^{2}+3-8 g) 5^{2}-3. 2^{2}-1 h)16:2-1+ 7^{2}$

Answer 1

a) (2^3)*5 + 3^2 = 8*5 + 9 = 40 + 9 = 49

b) 70^0 + 0^70 = 1 + 0 = 1

c) 3*(7^1) - 4*(5^0) = 3*7 - 4*5 = 21 - 20 = 1

d) 3^4 - (2^4):8 - 3*4 = 12 - 8:8 - 12 = 12 - 1 -12 = 12 - 13 = -1

e) 5^2 + 3*2 - 4 = 25 + 6 - 4 = 31 - 4 = 27

f) 5*(2^2) + 3 - 8 = 5*4 -5 = 20 - 5 = 15

g) 5^2 - 3(2^2) - 1 = 25 - 3*4 - 1 = 25 - 12 - 1 = 22

h) 16:2 - 1 +7^2 = 8 - 1 + 49 = 56