Решите уравнение:
1) x^2 - 4(x-2)+ 3x - 14 = 0
2) 4x^2-3(x^2-2x)-10=6
3) 5x^2-3(x^2+2x)+3x+9=14
4) (2x+3)(3x+1)-10=11x+20
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