= 1 - 3 + 5 - 7 + 9 - 11 = -6
đùa thui, lm nhah:
( 1 - 3 ) + ( 5 - 7 ) + ( 9 - 11 )
= -2 + -2 + -2
= 3 . -2
= -6
Beep bop bap
1,tim gia tri nho nhat cua
A=|x-2|+11
B=-17+|x+1|
giup minh nhe nho giai tung buoc ra nha
a)(27+65)+(346-27-65)
b)(42-69+17)-(42+17)
Trinh bay ro tung buoc gium minh nha
1. Cho A= 1+3+32+33+..........+320 va B=321:2.Tinh B - A ?
2. Cho C= 119+ 118 +117 +.....+11 +1 Chung minh rang C chia het cho 5 ?
nhanh gium minh nha Minh lk cho
a 2.(x-11)-40=38
b 2015+{2016.[9-(11-8)^2]+7}
c 3(x-63)-5.18.7
tinh gium minh nha
Chung to rang : (9m+9)(9m+2)(9m+3)(9m+4) chia het cho 5 voi moi m thuoc N
Giai thich gium minh nha cac ban
Ai lam xong minh tick cho
tinh gia tri bieu thuc:
a)122-112
b)(11+72):60-50
c)64.25+75.26-158:157
d)23.53-{92-5.[113:121-2.(375:375+180)]}
cac ban giai nhanh gium minh nhe @ thanhk you!!!
9<3^n<27
may ban xem lai dung de hay k nha neu sai sua lai gium minh roi giai bai toan giup minh nha
\(A=\frac{6^{30}.3^{11}.7-2^{31}.5.3^{40}}{2^{28}.17.3^{38}-6^{27}.3^{11}}.\)
giai gium minh cho 3 tick
vn noi la lam
mn oi cho minh hoi bai nay voi
giai thich ky cho minh nhe ,
cam on nhieu lam
tinh tong
s=1-3+5-7+...+2001-2003
s=1+3-5-7+9+11-..-405-407
nhanh nha cam on