Question

1) Calcule:
a) 5!+31-21
b 41-21-0!

Answer 1

Resposta:

a) 5!+31-21 = 130

b 41-21-0! = 20

Explicação passo a passo:

a) 5!+31-21 = 5.4.3.2.1 + 10 = 120 + 10 = 130

b 41-21-0! = 20 - 1 = 19

Answer 2

a) 5!+31-21 (símplificar o "!")

(5•4•3•2•1)+31-21

=(20•3•2•1)+31−21

=(60)(2)(1)+31−21

=(120•1)+31−21

=120+31−21

=151−21

=130

b 41-21-0! (simplificar o "!")

41-2¹-¹

=20−1

=19