29 баллов Решите неравенство:
6x^2-7x^2 меньше или равно 0
15x^2-29x-2<0
5x^2-2x+1<0
-7^2+5x-2 меньше или равно 0
16x^2-40x+25 больше или равно 0
9x^2+12x+4<0
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