a: 4x>=3x-1
=>4x-3x>=-1
=>x>=-1
b: =>11x+2>4(9x+1)-3(8x+1)
=>11x+2>36x+4-24x-3
=>11x+2>12x+1
=>-x+1>0
=>-x>-1
hay x<1
c: \(\Leftrightarrow\left(x-1\right)\left(x^2+3x+1\right)-\left(x-1\right)\left(x^2+3x+2\right)>=0\)
=>(x-1)<=0
=>x<=1
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