2x(3x-2)-3(x2-4x)=3x(x-7)+2 (x2= типо во 2 степени)
2x(3x–2)–3(x^2–4x)=3x(x–7)+2 6x^2-4x-3x^2+12x=3x^2-21x+2 3x^2+8x=3x^2-21x+2 8x+21x=2 29x=2 x=2/29