July 2022 0 7 Report
Решить неравенства   8x^2+10x-3> или =0; 25x^2-10x+1>или=0;  49x^2-28x+4<0;        9x^2-x+9>или=3x^2+18x-6;  (5x+1)(3x-1)>(4x-1)(x+2); (5x+7)(x-2)<21x^2-11x-13
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