a: =50-52=-2

b: =-35+149-114

=-149+149

=0

c: =-29x100=-2900

x=-36

x=11

x=100

x=14

x=-36

x=11

x=100

x=14

\(a)22.3-\left(110+7\right):326\)

\(=66-117:326\)

\(=66-\frac{117}{326}\)

\(=\frac{21399}{326}\)

\(b)1+2+3+.....+2019+2010\)

Ta tạm để số 2010 ra ngoài .

Số số hạng của tổng trên là :

( 2019 - 1 ) : 1 + 1 = 2019 ( sh )

Tổng trên là :

\(\left(2019+1\right)\times2019:2=2039190\)

\(\Rightarrow2039190+2010=2041200\)

\(c)64:4+2.52\)

\(=16+104\)

\(=120\)

\(d)2008.213+87.2008\)

\(=2008.\left(213+87\right)\)

\(=2008.300\)

\(=602400\)

\(e)12: \left\{390:\left[500-\left(125+35.7\right)\right]\right\}\)

\(=12:\left\{390:\left[500-370\right]\right\}\)

\(=12:\left\{390:130\right\}\)

\(=12:3=4\)

\(g)33.118-33.18\)

\(=3894-594\)

\(=3300\)

\(h)150-\left[102-\left(14-11\right).2\right]:9\)

\(=150-\left[102-6\right]:9\)

\(=150-96:9\)

\(=150-\frac{32}{33}\)

\(=\frac{4918}{33}\)

\(i)4.52-3\)

\(=208-3\)

\(=205\)

Ảnh đâu bn

-1/64 nha b

\(\frac{3}{2}+\frac{5}{4}+\frac{9}{8}+\frac{17}{16}+\frac{33}{32}+\)\(\frac{65}{64}-7\)

\(=\frac{96}{64}+\frac{80}{64}+\frac{72}{64}+\frac{66}{64}+\frac{65}{64}-7\)

\(=\frac{96+80+72+66+64}{64}-7\)

\(=\frac{378}{64}-\frac{7}{1}\)

\(=\frac{189}{32}-\frac{224}{32}\)

\(=\frac{-35}{32}\)

\(S=1+\frac{1}{2}+1+\frac{1}{4}+1+\frac{1}{8}+1+\frac{1}{16}+1+\frac{1}{32}+1+\frac{1}{64}-7\)

\(S=\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+\frac{1}{16}+\frac{1}{32}+\frac{1}{64}-1\)

Ta đặt:    \(P=\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+\frac{1}{16}+\frac{1}{32}+\frac{1}{64}\)

=> \(2P=1+\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+\frac{1}{16}+\frac{1}{32}\)

=> \(2P-P=\left(1+\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+\frac{1}{16}+\frac{1}{32}\right)-\left(\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+\frac{1}{16}+\frac{1}{32}+\frac{1}{64}\right)\)

=> \(P=1-\frac{1}{64}\)

Mà    \(S=P-1\)

=> \(S=1-\frac{1}{64}-1=-\frac{1}{64}\)

Vậy \(S=-\frac{1}{64}\)

\(\dfrac{4^9\cdot36+64^4}{100\cdot16^4}=\dfrac{2^{20}\cdot3^2+2^{24}}{2^{18}\cdot5^2}=\dfrac{2^{20}\left(3^2+2^4\right)}{2^{18}\cdot5^2}=4\)

 ko bt