614. Яке з наведених рівнянь не має коренів:
1) .x2 - 6x + 4 = 0; 3) 3x2 + 4x - 2 = 0;
2) 5x - 10x + 6 = 0; 4) 0,04x2 - 0,4x + 1 - 0?
даю 5 балов ​
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