Có phải bạn soạn nhầm 16 thành 6 đúng không :)
\(\frac{\frac{15}{8}-\frac{15}{16}-\frac{15}{32}+\frac{15}{64}}{3-\frac{3}{2}-\frac{3}{4}+\frac{3}{8}}\)
\(=\frac{15.\left(\frac{1}{2}-\frac{1}{4}-\frac{1}{8}+\frac{1}{16}\right)}{6.\left(\frac{1}{2}-\frac{1}{4}-\frac{1}{8}+\frac{1}{16}\right)}\)
\(=\frac{15}{6}\)
\(=\frac{5}{2}\)
Tính tổng S=1/2+3/4+7/8+15/16+31/32+63/64+127/128-6
a/ 15^3-3.15^2-3^3 phần 11.34
b/ 8^5.16^3 phần 4^13 - 3^33.4^15 phần 6^32
\(\dfrac{45^{10}\cdot5^{20}}{75^{15}}\)
\(\dfrac{6^6+6^3+3^3+3^6}{-73}\)
\(\dfrac{27^7+3^{15}}{9^9-27}\)
\(\dfrac{8^{20}+4^{20}}{4^{25}+64^5}\)
a)(5+1/5-2/9)-(2-1/23-3/35+5/6)-(8+2/7-1/18)
b) 1/3-3/4(-3/5+1/64- -2/9-1/36+1/15
c) -5/7-(-5/67)+13/10+1/2+(-1/6)+1 3/14-(-2/5)
d)3/5:(-1/15-1/6)+3/5:(-1/3-1 1/15)
thuc hien phep tinh(1/2+3/4+7/8+15/16+31/32+63/64) -5
ban nao lam duoc minh like cho>,<...........................!!!!!!!
Tính: [15/32.(-2^6).(1/3^-4).25]/225.3^3.(2^-4).8^2
\(\frac{15^3-3.15^2-3^3}{11.3^4}\)
\(\frac{8^5.16^3}{4^{13}}-\frac{3^{33}.4^{15}}{6^{32}}\)
(x-1)x+2=(x-1)x+4
1/ 4 . 2/6 . 3/8 . 4/10 . 5/15 .... 30/62 . 31/64= 2x
1 tim cac so nguyen x,y biet x/7=6/21 -5/y=20/28 1/2=x/12 x/8=-28/32 3/y=12/24 3/4=15/y 2 viet 3 phan so bang phan so -10/15
