kho qua

4×11/3×22=2×2×11/3×11×2

=2/3

2^4150/2^750=2^3400

\(\frac{5^3.55.2^4.3^4.11}{2^5.3^3.33.55.5^2}=\frac{5^3.5.11.2^4.3^4.11}{2^5.3^3.3.11.5.11.5^2}\)

\(=\frac{2^4.3^4.5^4.11^2}{2^5.3^4.5^3.11^2}=\frac{1.1.5.1}{2.1.1.1}=\frac{5}{2}\)

\(\frac{5^3.55.2^4.3^4.11}{2^5.3^3.33.55.5^2}\)

\(=\frac{5^3.5.11.2^4.3^4.11}{2^5.3^3.3.11.11.5.5^2}\)

\(=\frac{5^4.11^2.2^4.3^4}{2^5.3^4.11^2.5^3}\)

\(=\frac{\left(5^3.11^2.2^4.3^4\right).5}{\left(5^3.11^2.2^4.3^4\right).2}\)

\(=\frac{5}{2}\)

a)  6 21

b)  - 24 28

c)  4 . - 3 11 . - 3 = 12 33

d)  9 . - 2 8 . - 2 = 18 16