\(\frac{2^2.3^3.35}{2^4.3^2.21}=\frac{2^2.3^2.3.35}{2^2.2^2.3^2.21}=\frac{3.35}{2^2.21}=\frac{3.35}{2^2.3.7}=\frac{35}{2^2.7}=\frac{35}{28}=\frac{5}{4}\)

\(\frac{2^2.3^3.35}{2^4.3^2.21}=\frac{2^2.3^2.3.5.7}{2^2.2^2.3^2.3.7}=\frac{5}{2^2}=\frac{5}{4}\)

viết hẳn ra

\(\dfrac{2^3.3^4}{2^3.3^2.5}=\dfrac{1.3^2}{1.1.5}=\dfrac{9}{5}\)

Ta có :2^3.3^4/2^2.3^2.5=2.3^2/1.1.5=2.9/5=\(\dfrac{18}{5}\)

i don't know

\(\frac{2^3.3^3.5^3.7.8}{3.2^4.5^3.14}=\frac{2^3.3^3.5^3.7.2^3}{3.2^4.5^3.2.7}\)

\(=\frac{2^6.3^3.5^3.7}{2^5.3.5^3.7}=\frac{2.3^2.1.1}{1.1.1.1}=2.3^2\)

\(=2.9=18\)

\(\frac{2^3.3^3.5^3.7.8}{3.2^4.5^3.14}=\frac{1.3^2.1.1.8}{1.2.1.2}=\frac{3.3.4}{2.1}=\frac{3.3.2}{1}=18\)

\(...=\frac{2^6.3^3.5^3.7}{2.^53.5^3.7}=18\)

Ta có:

\(\frac{\left(-2\right)^3.3^3.5^3.7.8}{3.5^3.2^4.42}=\frac{\left(-2\right).\left(-2\right).\left(-2\right).3.3.3.5.5.5.7.2.2.2}{3.5.5.5.2.2.2.2.2.3.7}\)

\(=\frac{\left(-2\right)}{1}=-2\)

bn ghi ro hơn ko 

\(\frac{2^3.3^3.5^3.7.8}{3.2^4.5^3.14}\)mk viết như vầy bn cố gắng hiểu nhé:.

2³.3³.5³.7.8/ 3.2⁴.5³.14

= 2³.3³.5³.7.8/3.2⁴.5³.7.2

=2³.3³.5³.8/3.2⁴.5³.2

=2³.3³.5³.2³/2⁴.2.5³

= 2³.2³.3³.5³/ 2⁴.2.5³

= 2⁶. 3³.5³/ 2⁵. 5³

= 2⁵.2.3³.5³/2⁵.5³

= 2.3³/1

^{= 2. 27/1}

^{= 54/1 = 54}

^{Thế nha bn, chúc bn học tốt!}

a: \(=\dfrac{-4\cdot13\cdot9\cdot5}{3\cdot4\cdot5\cdot2\cdot13}=\dfrac{3}{2}\)

b: \(=\dfrac{1}{2}\cdot\dfrac{1}{3}\cdot5=\dfrac{5}{6}\)