Question

rút gọn 3^4*2^3-3^4*4 phần 3^5*3^2-3^5*5

Answer 1

Ta có: \(\dfrac{3^4\cdot2^3-3^4\cdot4}{3^5\cdot3^2-3^5\cdot5}\)

\(=\dfrac{3^4\cdot\left(2^3-4\right)}{3^5\cdot\left(3^2-5\right)}\)

\(=\dfrac{3^4\cdot4}{3\cdot3^4\cdot4}=\dfrac{1}{3}\)

Answer 2

\(\dfrac{3^4\cdot2^3-3^{\text{4}}\cdot4}{3^5\cdot3^2-3^5\cdot5}\)=\(\dfrac{3^4\left(8-4\right)}{3^5\left(9-5\right)}\)=\(\dfrac{4}{3.4}\)=\(\dfrac{1}{4}\)