d) Ta có: \(\dfrac{2^{76}-2^{74}}{2^{78}-2^{76}}\)

\(=\dfrac{2^{74}\left(2^2-1\right)}{2^{76}\left(2^2-1\right)}=\dfrac{2^{74}}{2^{76}}\)

\(=\dfrac{1}{2^2}=\dfrac{1}{4}\)

2⁷⁶ - 2⁷⁴/2⁷⁸ - 2⁷⁶

= 2⁷⁴ . ( 2² - 1)/2⁷⁶ . ( 2² - 1)

= 2⁷⁴/2⁷⁶

= 1/2² = 1/4

2^76-2^74/2^78-2^76

=2^76-(2^2)^37/(2^2)^38-2^76

=(2^2)^37/(2^2)^38=1/4

tick cho mk nha bạn

\(\frac{2^{76}-2^{74}}{2^{78}-2^{76}}=\frac{2^{74}\left(2^2-1\right)}{2^{76}\left(2^2-1\right)}=\frac{2^{74}}{2^{76}}=\frac{1}{2^2}=\frac{1}{4}.\)

học tốt ~~~

\(\dfrac{2^{76}-2^{74}}{2^{78}-2^{76}}=\dfrac{2^{74}\left(2^2-1\right)}{2^{76}\left(2^2-1\right)}=\dfrac{1}{2^2}=\dfrac{1}{4}\)

\(\left(1+\frac{1}{11}\right)\left(1+\frac{1}{12}\right)...\left(1+\frac{1}{16}\right)\)

\(=\frac{12.13.14....17}{11.12.13....16}=\frac{17}{11}\)

toi ko biet lm

\(\frac{37.7+37.3}{74.25-74.10}=\frac{37.\left(7+3\right)}{74.\left(25-10\right)}=\frac{37.10}{37.2.15}=\frac{10}{30}=\frac{1}{3}\)   

\(\frac{2^{76}-2^{74}}{2^{78}-2^{76}}=\frac{2^{74}.2^2-2^{74}}{2^{76}.2^2-2^{76}}=\frac{2^{74}.\left(2^2-1\right)}{2^{76}.\left(2^2-1\right)}=\frac{2^{74}}{2^{74}.2^2}=\frac{1}{2^2}=\frac{1}{4}\)

kq la 1/4

ai h cho minh minh h lai cho