Question

4¹⁰×8¹²/2²⁰×16⁸

3⁹×5¹⁰/9⁴×25⁵

27⁴×8⁴/9⁵×2⁸

Answer 1

\(\frac{4^{10}.8^{12}}{2^{20}.16^8}=\frac{\left(2^2\right)^{10}.\left(2^3\right)^{12}}{2^{20}.\left(2^4\right)^8}=\frac{2^{20}.2^{36}}{2^{20}.2^{32}}=2^{36-32}=2^4=16\)

\(\frac{3^9.5^{10}}{9^4.25^5}=\frac{3^9.5^{10}}{\left(3^2\right)^4.\left(5^2\right)^5}=\frac{3^9.5^{10}}{3^8.5^{10}}=3^{9-8}=3^1=3\)

\(\frac{27^4.8^4}{9^5.2^8}=\frac{\left(3^3\right)^4.\left(2^3\right)^4}{\left(3^2\right)^5.2^8}=\frac{3^{12}.2^{12}}{3^{10}.2^8}=3^{12-10}.2^{12-8}=3^2.2^4=9.16=144\)