Question

help tìm x biết

(2x-1)⁵=32

1/27 x 3^x=243

Answer 1

cứu

Answer 2

a: =>(2x-1)^5=2^5

=>2x-1=2

=>2x=3

=>x=3/2

b: =>3^x=243*27=3^5*3^3=3^8

=>x=8

Answer 3

\(a,\left(2x-1\right)^5=32\\ \Leftrightarrow2x-1=2\\ \Leftrightarrow2x=3\\ \Leftrightarrow x=\dfrac{3}{2}\\ b,\dfrac{1}{27}\cdot3^x=243\\ \Leftrightarrow3^x=6561\\ \Leftrightarrow3^x=3^8\\ \Leftrightarrow x=8\)