Объяснение:
| ax²+bx+c=0 | a | b | c | b^2-4ac | √(b^2-4ac) |
| x²+6x+8=0 | 1 | 6 | 8 | 4 | 2 |
| 2x^2+3x-2=0 | 2 | 3 | -2 | 25 | 5 |
| -x²+7x+18=0 | -1 | 7 | 18 | 121 | 11 |
| (1/2)x²-2=0 | 1/2| 0 | -2 | 4 | 2 |
| 5x²-x=0 | 5 | -1 | 0 | 1 | 1 |
Объяснение:
| ax²+bx+c=0 | a | b | c | b^2-4ac | √(b^2-4ac) |
| x²+6x+8=0 | 1 | 6 | 8 | 4 | 2 |
| 2x^2+3x-2=0 | 2 | 3 | -2 | 25 | 5 |
| -x²+7x+18=0 | -1 | 7 | 18 | 121 | 11 |
| (1/2)x²-2=0 | 1/2| 0 | -2 | 4 | 2 |
| 5x²-x=0 | 5 | -1 | 0 | 1 | 1 |