300. Решите уравнение. 1) 7|x| — 6|x| = 1; 2) 2 |x| +3|x| = 8; 3) [-х] + 4[-х] = 9;
4) 5[-х] — 2|-x| = 18;
5) [2x] + 3[2x| = 2,4;
6) 4 [3х] + 5 [3x] = 8, 1,
4) 5[-х] — 2|-x| = 18;
5) [2x] + 3[2x| = 2,4;
6) 4 [3х] + 5 [3x] = 8, 1,
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Ответ:
1)x1=-1,x2=1; 2)x1=-4,x2=2; 3)x=94;4)x=-6; 5)2x+3;6)dxdy =-xy+5 , став❤и бал