8 . ( - 25 ) . 59 . ( -125 ) . 4
= [ 8 . ( -125 ) ] . [ ( -1 . 4 ] . 59
= - 1000 . -100 . 59
= 100000 . 59
= 5900000
8 . ( - 25 ) . 59 . ( -125 ) . 4
= [ 8 . ( -125 ) ] . [ ( -1 . 4 ] . 59
= - 1000 . -100 . 59
= 100000 . 59
= 5900000
) 47.69-31.(-47)
b) 16.( 38 -2 ) - 38.( 16 -1 )
c) (-41).( 59+2 ) + 59 .( 41 -2 )
d)125.(-8).(-25).9.4.1000 :3
a)-524 . [(23+(-45)]+524.(-45+123)
b)47.69-31.(-47)
c)16.(38-2)-38.(16-1)
d) (-41).(59+2)+59.(41-2)
e) 125.(-8).(-25).9.4.100^0 :3
tinh :
a,(-8).25 .(-2).4.(-5).125
/b,19.25+9.95+19.30/
c,12.(-78)-12.22-88.78-176/
d,2^60-2^59-2^58-......-2^1-2^0
bài1 tìm x thuộc z
a) 10-x-5=-5-7-11
b) |x| -3=0
c) ( 7-|x| ) .(2x-4)=0
c)2+3x=-15-19
d) 2x-5=-17+12
bài2 tính nhanh
a)16.(38-8)-38.(16-1)
b) (-41).(59+2)+59.(41-2)
c)125.(-8).(-25).9.4.100^0:3
giải nhanh giúp mk đg cần gấp
a, ( - 5 ) . ( - 7 ) . 4 . 20 . ( - 25 )
b, ( - 16 ) . 73 + ( - 16 ) . 27
c, ( - 48 ) . 159 - ( - 48 ) . 59
d , 72 . ( - 83 ) + ( - 72 ) . ( - 125 )
e , ( - 81 ) . 125 - 181 . ( - 125 )
giup mik vs ak mik camon
tinh nhanh
4 x 125 x 25 x 8
2 x 8 x 50 x25 x125
2 x 3 x 4 x 5 x 50 x 25
25 x 20 x 125 x 8 - 8 x 20 x 5 x 125
24) 15 (4-7)- 15 (5-3)
25) 73(8-59) -59(8-73)
tính hợp lí nếu có thể
(-17) + 42 +(-183)+58
125.( -21)+21.225
37.(13-5)-13.(37-5)
25-25.[23+7.(-59+56)]+l-12l:(-4)
1. (-12)+(-15)+(-31) | 2. 25+37-59 | 3. (-12)+13-(-60)
4. 24:(-2)+(-5) | 5. 32.(-2)+64 | 6. 18.3+(-50):5
7. (-24)+37+163+(-176) | 8. 125+217+(-625)+529 | 9. 29+132+237+868+763
10. (-87)+126+187+74 | 11. 29.87+29.13 | 12. 123.(-29)-23.(-29)
13. 31.(-18)+31.(-81)-31 | 14.(-12).47+(-12).52+(-12) | 15. 24.(16-5)-16.(24-5)
16. 29.(29-3)-19.(29-13) | 17. -452-(-67+75-452) | 18. -(-171+89+223)-(71-111)+223
19. 21.83-3.7.(-17) | 20. 35-{12-[-14+(-2)]} | 21.5+10+15+20+....+1000
22. 3-6+9-12+....+195-198