Question

POR FAVOR ME AJUDEM É URGENTE!!!

Answer 1

Explicação passo-a-passo:

1)

a)3.2-1.(-4)

6+4=10

b)2.6-5.(-3)

12+15=27

c)6.7-3.8

42-24=18

d)5.7-1.8

35-8=27

2)

a)2.6.7+(-3).8.1+4.5.3-1.6.4-3.8.2-7.5.(-3)

84-24+60-24-48+105=153

b)1.5.4+2.2.1+(-3).4.0-1.5.(-3)-0.2.1-4.4.2

20+4-0+15-0-32=7

c)(-2).(-3).1+1.1.2+3.4.4-2.(-3).3-4.1.(-2)-1.4.1

6+2+48+18+8-4=78

3)

a)2!.3!

2.1.3.2.1=12

b)0!.5!

1.5.4.3.2.1=120

c)

$\frac{6!}{4!.8!} \\\\\frac{6!}{4.3.2.1.8.7.6!}\\\\\frac{1}{4.3.2.1.8.7} \\\\\frac{1}{1344}$

4)

6!=6.5.4.3.2.1=720