19^100+9^96+19^92+19^88+...+19^4+1/19^102+19^100+19^98+19^96+...+19^2+1
nhanh đang cần gấp
Bài 2: Thực hiện phép tính một cách hợp lí
f) \(\dfrac{7}{19}\) . \(\dfrac{8}{11}\) + \(\dfrac{3}{11}\) . \(\dfrac{7}{19}\) +\(\dfrac{-12}{19}\)
i) ( \(\dfrac{3}{8}\) + \(\dfrac{-3}{4}\)+ \(\dfrac{7}{12}\) ) : \(\dfrac{5}{6}\) +\(\dfrac{1}{2}\)
thực hiện phép tính :
19/35 . 8/11 + 16/11 . 8/35 - 9/11
(7/41 - 4/9) - (3/19 +7/41) + (4/9 - 16/19)
tính A=2/3*5+3/5*8+11/8*19+13/8*19+25/32*57+30/57*87
Tính:
B=(74+19/35).7/90+(15+16/35).7/90
1/2×5 + 1/3×5 + 1/3×7 + 1/4×7 + ...+ 1/9×19 + 1/10×19
Tính : \(\dfrac{5.2^{30}.3^{18}-2^2.3^{20}.2^{27}}{5.2^9.2^{19}.3^{19}-7.2^{29}.3^{18}}\)
Thực hiện phép tính : \(\dfrac{5.2^{30}.3^{18}-2^3.3^{20}.2^{27}}{5.2^9.2^{19}.3^{19}-7.2^{29}.3^{18}}\)
