\(P=\dfrac{3^{140}\cdot2^{74}-2^4}{3^{72}\cdot3^{70}\cdot2^{70}-3^2}=\dfrac{2^4\left(3^{140}\cdot2^{70}-1\right)}{3^2\left(3^{140}\cdot2^{70}-1\right)}=\dfrac{16}{9}\)

h cho minh nha 

a= -7/156

b=1/12

c=-7/55

d=17/21

e=10/7

cho minh nhé

\(\frac{-1}{39}+\frac{-1}{52}=\frac{-7}{156}\)

\(\frac{-6}{9}+\frac{12}{16}=\frac{-2}{3}+\frac{3}{4}=\frac{1}{12}\)

\(\frac{-2}{5}-\frac{-3}{11}-\frac{34}{37}-\frac{74}{-85}=\frac{-1215}{6919}\)

\(\frac{-5}{9}:\frac{-7}{18}=\frac{-5}{9}.\frac{-18}{7}=\frac{10}{7}\)

bấm mt

-1/39 + -1/52 = -7/156

-6/9 + -12/16 = -17/12

-2/5 - - 3/11 [ (-) + ( -) = +] = -2/5 + 3/11 = -7/55

-34/37 - 74/ -85 = -152/3145

-5/9 : -7/18 = 10/7

 -7/156

-17/12

-7/55

-152/3145

10/7

Quy đồng rồi tính là ra ngay mà

\(\left(\dfrac{9}{16}\right)^{2016}.\left(\dfrac{16}{9}\right)^{2015}.\dfrac{4}{3}\)

=\(\dfrac{9^{2016}}{16^{2016}}.\dfrac{16^{2015}}{9^{2015}}.\dfrac{4}{3}\)

= \(\dfrac{9}{16}.\dfrac{4}{3}=\dfrac{3^2.4}{4^2.3}=\dfrac{3}{4}\)

tinh nhanh

70+50+30+50+26+97+3+74

=(70+30)+(50+50)+(97+3)+(74+26)

=100+100+100+100

=400

209-134

56+78=134

78+97=175

145-74=71

12+56-34+89=68-34+89=34+89=123

70+50+30+50+26+97+3+74=(70+30)+(50+50)+(26+74)+(97+3)=100+100+100+100=400

209-134=75

210-73=137

134 175 71 191

Trả lời:

37 . 18 - 9 . 72 + 100

= 37 . 2 . 9 - 9 . 72 + 100

= 74 . 9 - 9 . 72 + 100

= (74 - 72) . 9 +100

= 2 . 9 + 100

= 18 + 100

= 118

Hok tốt!

Vuong Dong Yet

37 x 18 - 9 x 72 + 100

=18x(37-36)+100

=18x1+100

=18+100

=118

37 x 18 - 9 x 74 + 100 

= 37 x 2 x 9 - 9 x 74 + 100 

= 74 x 9 - 9 x 74 + 100 

= 0 + 100 

= 100 

Ta có : \(\frac{\left(\frac{2}{5}\right)^9.10^9-\left(\frac{-9}{4}\right)^5:\left(\frac{-3}{16}\right)^{10}}{4^{12}+16^9}\)

=\(\frac{\left(\frac{2}{5}.10\right)^9-\left[\left(\frac{-3}{2}\right)^2\right]^5:\left(\frac{-3}{16}\right)^{10}}{\left(2^2\right)^{12}+\left(2^4\right)^9}\)=\(\frac{4^9-\left(\frac{-3}{2}\right)^{10}:\left(\frac{-3}{16}\right)^{10}}{2^{24}+2^{36}}\)=\(\frac{4^9-\left[\left(\frac{-3}{2}\right):\left(\frac{-3}{16}\right)\right]^{10}}{2^{24}\left(1+2^{12}\right)}\)

=\(\frac{\left(2^2\right)^9-8^{10}}{2^{24}\left(1+2^{12}\right)}\)=\(\frac{\left(2^2\right)^9-\left(2^3\right)^{10}}{2^{24}\left(1+2^{12}\right)}\)=\(\frac{2^{18}-2^{30}}{2^{24}\left(1+2^{12}\right)}\)=\(\frac{2^{18}\left(1-2^{12}\right)}{2^{24}\left(1+2^{12}\right)}\)=\(\frac{1-2^{12}}{2^6\left(1+2^{12}\right)}\)

Không biết đúng hong nha!