Решите уравнение:
1) 2-6x – 27 = 0;
5) х2 + 8х -13 = 0;
2) х2 - 9x + 20 = 0;
6) 2x2 – 4х –17 = 0;
3) 10x? - 9x + 2 = 0;
7) 9х2 + 42х + 49 = 0;
4) 21x2 - 2x – 3 = 0;
8) x2 –10x+37 = 0.
2. Решите уравнение:
1) (3х + 2x – 4) = 5;
2) (х+1)(х – 2) - (4х – 3)(х + 5) = x(х – 9);
3) (5х – 3)? + (2x – 3х2х + 3) = 2;
