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nina2744
@nina2744
August 2021
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Решите уравнение:
1) 5x(3х - 2) - 15x(4 + х) = 140;
2) 1,2х(4 + 5x) = За(2x + 1) - 9;
3) 6x(7x - 8) - 2x(21х - 6) = 3 - 30х;
4) 12х - 3x(6x - 9) = 9x(4 - 2x) + 3x;
5) 7х² - x(7x - 5) - 2(2,5х + 1) - 3 = 0;
6) 8(х² - 4) - 4x(3,5х - 7) = 20x - 6x².
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