K - 2016 = 1 + ( 1+ 2) + (1+2+3)+...+(1+2+3+...+2017) /2017x1+2016x2+2015x3+...+2x2016+1x2017

k=

Tính nhanh

\(A=\frac{1+3+6+...+\left(1+2+...+2016\right)}{1x2017+2x2016+3x2015+...+2017x1}\)

giải ra cho mk nha , ai nhanh nhất mk tick 

Tìm K sao cho: \(K-2016=\frac{1+\left(1+2\right)+\left(1+2+3\right)+...+\left(1+2+3+...+2017\right)}{2017\times1+2016\times2+2015\times3+...+2\times2016+2017\times1}\)

Find K such that:

K - 2016 = \(\frac{1+\left(1+2\right)+\left(1+2+3\right)+...+\left(1+2+3+...+2017\right)}{2017\times1+2016\times2+2015\times3+...+2\times2016+1\times2017}\)

Tìm K biết :

                  K - 2016 = \(\frac{1+\left(1+2\right)+\left(1+2+3\right)+...+\left(1+2+3+...+2017\right)}{2017\cdot1+2016\cdot2+2015\cdot3+...+2\cdot2016+2\cdot2017}\)

\(\left(1+\frac{2}{1}\right)x\left(1+\frac{2}{2}\right)x\left(1+\frac{2}{3}\right)x\left(1+\frac{2}{4}\right)x...x\left(1+\frac{2}{2016}\right)x\left(1+\frac{2}{2017}\right)\)  

tinh bieu thuc tren

Tính M , biết :

\(M=1+\frac{1}{2}\times\left(1+2\right)+\frac{1}{3}\times\left(1+2+3\right)+\frac{1}{4}\times\left(1+2+3+4\right)+...+\frac{1}{2016}\times\left(1+2+3+4+...+2015+2016\right).\)

1, Tính giá trị biểu thức :

\(a,A=5\frac{9}{10}:\frac{3}{2}-\left(2\frac{1}{3}.4\frac{1}{2}-2.2\frac{1}{3}\right):\frac{7}{4}\)

\(b,B=\left(1-\frac{1}{2}\right).\left(1-\frac{1}{3}\right).\left(1-\frac{1}{4}\right).............\left(1-\frac{1}{2017}\right).\left(1-\frac{1}{2018}\right)\)

Mọi người giúp mình giả toán nha !

tính nhanh \(\left(1+\frac{1}{2}\right)x\left(1+\frac{2}{3}\right)x\left(1+\frac{3}{4}\right)x.....x\left(1+\frac{1}{2017}\right)\) 

giúp mik giải nha, nhớ là tín nhanh đó