Question

giúp mk bài 1 vs ạ

Answer 1

Câu 2: 

a: =>x-3/2=1/4

=>x=1/4+3/2=7/4

b: \(x=\dfrac{5^2\cdot\left(-5\right)^3\cdot2^4}{5^4\cdot2^4}=-5\)

c: \(\Leftrightarrow3^{2x+2}=3^{20}\)

=>2x+2=20

=>2x=18

=>x=9

d: \(\Leftrightarrow x\cdot\dfrac{1}{10}=\dfrac{3}{5}-\dfrac{1}{4}+\dfrac{1}{2}=\dfrac{12-5+10}{20}=\dfrac{17}{20}\)

=>x=17/2