Sửa đề: \(B=\frac{\left(3\cdot4\cdot2^{16}\right)^2}{11\cdot2^{13}\cdot4^{11}-16^9}\cdot\frac{3+\frac37-\frac{3}{11}}{\frac97-\frac{9}{11}+9}\)

\(=\frac{\left(3\cdot2^2\cdot2^{16}\right)^2}{11\cdot2^{13}\cdot2^{22}-2^{36}}\cdot\frac{3\left(1+\frac17-\frac{1}{11}\right)}{9\left(1+\frac17-\frac{1}{11}\right)}\)

\(=\frac{\left(3\cdot2^{18}\right)^2}{11\cdot2^{35}-2^{36}}\cdot\frac13\)

\(=\frac{9\cdot2^{36}}{2^{35}\left(11-2\right)}\cdot\frac13=\frac23\)

a)1+2+3+...+99+100=(100+1).100:2=5050

b)22+24+26+...+100+112=(22+112).46:2=3082

a) SSH: (100-1):1+1=100

    Tổng: (100+1)x100:2=5050

b) SSH: (112-22):2+1=46

    Tổng: (112+22)x46:2=3082

16⁹ nhé!

khó quá đi

mk ko ghi lại đề bài nha

a, = [(-37) +37] + (14+26)

    =   0+40

    = 40

b, = [( -24) +24] +(6+10)

    =  0+ 16 

    = 16 

k mk nha bạn

a , ( - 37 ) + 14 + 26 + 37

= [ ( - 37 ) + 37 ] + 14 + 16

= 0 + 14 + 16

= 30

b , ( - 24 ) + 6 + 10 + 24

= [ ( - 24 ) + 24 ] + 6 + 10

= 0 + 6 + 10

= 16

B = 1 2 + 1 6 + 1 12 + 1 20 + 1 30 + 1 42 + 1 56 + 1 72 + 1 90

B = 1 1.2 + 1 2.3 + 1 3.4 + 1 4.5 + 1 5.6 + 1 6.7 + 1 7.8 + 1 8.9 + 1 9.10

= 1 − 1 2 + 1 2 − 1 3 + 1 3 − 1 4 + 1 4 − 1 5 + ... + 1 9 − 1 10

= 1 + − 1 2 + 1 2 + − 1 3 + 1 3 + − 1 4 + 1 4 + − 1 5 + 1 5 + ... + − 1 9 + 1 9 − 1 10

= 1 − 1 10 = 9 10