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(2-x)^2>(x-4)^2
(2-x)(2-x)>(x-4)(x-4)
4-2x-2x+x^2>x^2-4x-4x+16
4-4x+x^2>x^2-8x+16
4-4x+x^2-x^2+8x-16>0
4x-12>0
4x>12
x>12/4
x>3
¦2x-1¦<¦x+2¦
(2x-1)^2<(x+2)^2
(2x-1)(2x-1)<(x+2)(x+2)
4x^2-2x-2x+1<x^2+2x+2x+4
4x^2-4x+1<x^2+4x+4
4x^2-4x+1-x^2-4x-4<0
3x^2-8x-3<0
(3x-9)(3x+1)
=>3x-9<0
3x<9
x<9/3
x<3
=>3x-1<0
3x<1
x<1/3
4. 2x^2+3x-2=0
(2x+4)(2x-1)
=>2x+4=0
2x=-4
x=-4/2
x=-2
=>2x-1=0
2x=1
x=1/2
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