Решите уравнения (35.8—35.10): 35.8. 1) x(0,25x-3) - (0,5x +1)(0,5x-1)= 0;
2) (1,2 - x)(x + 1,2) + 1,8x + x2 = 0;
3) 0,49x2 - 3x - (0,7x + 2)(0,7x - 2) = 0;
4) (1,6x + 1)(1 - 1,6x) - 64x(1 -0,04x) = 0.​
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