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 

sai de roi ban oi

làm gì có đề nào như vậy

^{kết quả là-6}

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

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

\(=2.9=18\)

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

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

\(\frac{2^3.3^3.5^3.7.8}{3.2^4.5^3.14}\)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!}

\(\dfrac{\left(-2\right)^3.3^3.5^3.7.8}{3.5^3.2^4.42}\)

= \(\dfrac{\left(-2\right).2^2.3^3.5^3.7.2^3}{3.5^3.2^4.2.3.7}\)

= \(\dfrac{\left(-2\right).2^5.3^3.5^3.7}{3^2.5^3.2^5.7}\)

= -6

rút gọn được 5^3 và 7.8=42

còn (-2)^3.3^2/2^4=-3^2/2

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

\(-\frac{2^3.3^3.5^3.7.2^3}{3.5^3.2^4.2.3.7}=\)

\(-\frac{2^6.3^3.5^3.7}{2^5.3^2.5^3.7}=\)

\(-\left(2.3\right)=-6\)

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

\(=\frac{\left(-2.3.5\right)^3.7.2^3}{3.5^3.2^4.6.7}\)

\(=\frac{\left(-30\right)^3.2^3}{3.5^3.2^4.6}\)

\(=\frac{\left(-60\right)^3}{3.125.16.6}\)

Làm nốt nhé

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

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

B/  2³3×3²×5³×7×8

3×2³×2 ×5³×7×2

=3²×8

2×2

=18