(2x-3)(x+1)+(3-2x)²-(2x-3)(3x+1)=20
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(2x-3)(x+1)+(3-2x)²-(2x-3)(3x+1)=20
(2x-3)(x+1)+(3-2x)²-(2x-3)(3x+1)=20
(2x-3)(x+1)+(3-2x)²-(2x-3)(3x+1)=20