\(=\dfrac{5\cdot2^{30}-3^{20}\cdot2^{29}}{5\cdot2^{10}-7\cdot2^{30}\cdot3^3}\)
\(=\dfrac{2^{29}\left(5\cdot2-3^{20}\right)}{2^{10}\left(5\cdot1-7\cdot2^{20}\cdot3^3\right)}=\dfrac{2^{19}\cdot\left(10-3^{20}\right)}{5-189\cdot2^{20}}\)
rút gọn phân số
5.29.611-7.229.276 / 5.415.99-4.320.89
tính \(\dfrac{5.4^{45}.9^9-4.3^{70}.8^4}{5.29.6^{19}-7.2^{29}.27^6}\)
Tính nhanh
a, 15/90.94 + 15/94.98 + 15/98.102 + ....... + 15/146.150
b, 10/56 + 10/140 + 10/260 + ...... + 10/1400
\(\dfrac{4^6.9^5+6^9.120}{8^4.3^{12}-6^{11}}\)
Tính giá trị (4+căn bậc hai 15)*(căn bậc hai 4-căn bậc hai 15)*(căn bậc hai 10 - căn bậc hai 6) plz
so sánh : 215 và 310
\(A=\dfrac{3}{4}\cdot\dfrac{8}{9}\cdot\dfrac{15}{16}...8998\)
1/15+4/30+9/45+16/60+25/75+36/90+49/105+64/120+81/135
2^15. 9^4 phần 6^6. 8^3
Hãy rút gọn
