\(a;\frac{2^{78}+2^{79}+2^{80}}{2^{77}+2^{76}+2^{75}}=\frac{2^{78}\left(1+2+2^2\right)}{2^{75}\left(1+2+2^2\right)}=2^3=8\)
b) \(\frac{5^{56}+5^7}{5^{49}+1}=\frac{5^7\left(5^{49}+1\right)}{5^{49}+1}=5^7\)
\(a;\frac{2^{78}+2^{79}+2^{80}}{2^{77}+2^{76}+2^{75}}=\frac{2^{78}\left(1+2+2^2\right)}{2^{75}\left(1+2+2^2\right)}=2^3=8\)
b) \(\frac{5^{56}+5^7}{5^{49}+1}=\frac{5^7\left(5^{49}+1\right)}{5^{49}+1}=5^7\)
Tính nhanh giá trị của biểu thức:
a) (556 + 57) : (549+1)
b) (278 + 279 + 280 ) : (277 + 276 + 275)
Tinh nhanh cac gia tri bieu thuc sau :
(278 + 279 + 280) : (277+ 276 + 275)
(393 + 390) : ( 317 . 373)
(556+ 57): (549+ 1)
1 tính tính
2^78+2^79+2^80) : (2^77+2^76+2^75)
(2^78+2^79+2^80):(2^77+2^76+2^75) = ?
Tính:
(278+279+280):(277+276+275)
a) (62+72+82+92+102) - ( 12+22+32+42+52)
b) (1253 x 74 - 59 x 49 2) : 2005 2006
c) (278 + 279 + 280) : (277 + 276 + 275)
Ai làm dc trả lời gấp
Tính nhanh:K=1*3 + 2*4 + 3*5 + 4*6 +5*7 + 6*8 +...+75*77 + 76*78
mik đang cần gấppppppppppppppppppppp
giải giúp giùm đi:
(278+279 +280):(277+276+275)
Tinh nhanh (\(2^{78}+2^{79}+2^{80}\)):(\(2^{77}+2^{76}+2^{75}\))