TRl
\(\left(\frac{-9}{2}\right)^2=\frac{81}{4}\)
ht
\(\frac{-9}{2}\)mũ 2=\(\frac{81}{4}\)
( -9/2 mu 2 =81/4
TRl
\(\left(\frac{-9}{2}\right)^2=\frac{81}{4}\)
ht
\(\frac{-9}{2}\)mũ 2=\(\frac{81}{4}\)
( -9/2 mu 2 =81/4
chứng tỏ rằng A=2+2mu 2+2mu 3 +...+2mu 9+ 2mu 10 chia hết cho 3 và 31
F= 1+2+2mu 2+.....+2mu 9
A = 2mu 0 + 2 mu 1 + 2mu 2 + ...+ 2 mu 50
A = 2mu 0 + 2 mu 1 + 2mu 2 + ...+ 2 mu 50
(5 mu 4 + 4 mu 7) (8 mu9 - 2mu 7) (2mu 4-4 mu 2)
2mu a + 2mu b + 2mu c =10368 tim a,b,c
cho a= 2mu 2+ 2 mu 3+2mu4+....+2mu 12
chung to rang a chia hết cho 39
bai1 12mu n+1 + 11mu n+2 chia hết cho 133
bai2 3mu n+2 -2mu n+2 + 3 mu n -2mu n
Cach lam bai (× - 4):5=2mu 4 - 3 mu 2
(2×-9):5=7
4(×-3)= 5 mũ 2 - 1 mũ 10
Nhanh nha sap hoc them oi