Question

me ajudem por favor.

Answer 1

1-a)(+8)-(+5)=8-5=3
b)(+15)-(-3)=15+3=18
c)(-18)-(-10)=-18+10=-8
d)(-25)-(+22)=-25-22=-47
e)(-75)-(-25)=-75+25=-50
f)(-16)-(-25)=-16+25=9

2-a)(+10)-(-5)-(-8)-(+13)=
10+5+8-13=
15-5=
10

b)(-80)+(-18)-(-80)-(-18)=
-80-18+80+18=
62+98=
160

c)(-10+7)-(-5+3)-(-2+8)=
-3+2+6=
5

d)(-5-7)+(+1+13)-(+12-3)=
-12+14-8
2-8
-6

e)(-6).(+8).(-2)=
96

f)(+4).(-2).(-7).(+6)=
-8-42=
-50

3-a)(+9)²=81
b)(-9)²=81
c)(+9)³=729
d)(-9)³=-729
e)(+2)⁶=64
f)(-3)⁴=81
g)(5)⁴=625
h)(-6)³=-216

4-a)X+Y=
-(-3)³+-(-2)⁴=
+27-16=
11

b)X-Y=
-(-3)²--(-2)⁴=
27+16
43

c)X.Y=
-(-3)³.-(-2)⁴=
-27.16=
-432

Espero ter ajudado!