a: (x+3)(x+2)>(x-1)(x-3)
\(\Leftrightarrow x^2+5x+6>x^2-4x+3\)
=>9x>-3
hay x>-1/3
b: \(4x\left(x+2\right)< \left(2x-3\right)^2\)
\(\Leftrightarrow4x^2+8x< 4x^2-12x+9\)
=>20x<9
hay x<9/20
c: \(3\left(1-2x\right)< =4\left(5-\dfrac{3}{2}x\right)\)
=>3-6x<=20-6x
=>0x<=23(luôn đúng)