Решите,пожалуйста,ребята 1) 3x^3 - x^2 -7x +9 =0
2) x^4 - 7x^3 - 14x^2 - 7x +1 = 0
3) 2x^4 + x^3 - 11x^2 + x +2=0
4) 2x^3 - 5x^2 - 8x +20=0
2) x^4 - 7x^3 - 14x^2 - 7x +1 = 0
3) 2x^4 + x^3 - 11x^2 + x +2=0
4) 2x^3 - 5x^2 - 8x +20=0
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