[(25 : 2 - 22 x 22) x 9999] + 10000
= [(24 - 24) x 9999] + 1000
= (0 x 9999) + 10000
= 0 + 10000
= 10000
ỦNg hộ mk nha ^_-
[(25 : 2 - 22 x 22) x 9999] + 10000
= [(24 - 24) x 9999] + 1000
= (0 x 9999) + 10000
= 0 + 10000
= 10000
ỦNg hộ mk nha ^_-
bai 4 , tinh gia tri bieu thuc ;
a,A=2 mu 1 + 2 mu 2 +2 mu 3 +......+2 mu 2019
b, B=1+3+3 mu 2 +3 mu 3 +......+3 mu 2020
khong tinh gia tri bieu thuc hay so sanh 9 mu 8 nhan 5 mu 16 va 19 mu 20
gia tri nho nhat cua bieu thuc /x+2/mu 3 +2 la
Bai3:Tinh bang hai cach
Cach 1:Tinh gia tri so bi chia,so chia roi tinh gia tri ket qua.
Cach2:Chia hai luy thua cung co so.
a,3 mu 6 :3 mu 4
b,5 mu 7: 5 mu 5
c,3 mu 9: 3 mu 3
d,5 mu 5: 5
e,3 mu 2: 3 mu 0
A =7-(x.x+1) mu 2
gia trị lon nhat cua bieu thuc tren la nhieu?
a) 2345-1000:[19-2(21-18)mu 2]
b)107-{38+[7.3 mu 2-24:6+(9-7) mu 3]} :15
c) 10- [(2 mu 2-48).5+(2 mu 3 .10+8)]:28
2) tim so tu nhien a,biet rang a gan den 1000,a:12,a:21 deu co du la 5
3) tim boi chung lon hon 5000 be hon 10000 cua cac so 126;140;180.
tinh nhanh 3 mu 5 :3 mu 2-2 mu 3 x 2 +2013 mu 0
1 thuc hien phep tinh
151 -2 mu 91 : 2 mu 88 + 1 mu 2 . 3
cho 4 mu x . 9 mu y=6 mu 4 va81 mu x : 9 mu 2y=1 (voi x,y e N) . Hay tinh gia tri cua A=x mu 18+y mu 12 + 2014