f: =>2x+1=3 hoặc 2x+1=-3
=>2x=2 hoặc 2x=-4
=>x=1 hoặc x=-2
g: =>x(x-1)(x+1)=0
hay \(x\in\left\{0;1;-1\right\}\)
h: \(\Leftrightarrow2^{2x}\cdot2+2^{2x}\cdot4=3\cdot2^{11}\)
\(\Leftrightarrow2^{2x}=2^{10}\)
=>2x=10
hay x=5
i: \(\Leftrightarrow\left(7x-11\right)^3=32\cdot25+200=1000\)
=>7x-11=10
=>7x=21
=>x=3