nh hợp lí các biểu thức sau
a) 48 + l48 - 174l + (-74) b) (-123) + 77 + (- 257) + 23 -43
c) (- 57) + (- 159) + 47 + 169 d) (135 - 35) . (- 47) + 53 . (- 48 - 52)
e) \(\frac{3^{10}.11+3^{10}.5}{3^9.2^4}\) f) \(\frac{2^{10}.13+2^{10}.65}{2^8.104}\)
g)\(\frac{4^9.36+64^4}{16^4.100}\) h) \(\frac{2^{13}+2^5}{2^{10}+2^2}\)
i) \(\frac{11.3^{22}.3^7-9^{15}}{\left(2.3^{14}\right)^2}\) k) \(\frac{21^2.14.125}{35^5.6}\)
a: =48+174-48-74=100
b: =-123+23+77-257-43
=-100-200-43=-343
c: \(=\left(-57+47\right)+\left(-159+169\right)=-10+10=0\)
d: \(=100\cdot\left(-47\right)+53\cdot\left(-100\right)\)
\(=100\cdot\left(-100\right)=-10000\)
