1) -5² - 4 * 6 * -6 = 25 + 144 = 169
2) 7² - 4 * 12 * 1 = 49 - 48 = 1
3) 2² - 4 * 8 * -3 = 4 + 96 = 100
4) 19² - 4 * -6 * 7 = 361 + 168 = 529
5) 23² - 4* 15 * 4 = 529 - 240 = 289
6) 6² - 4 * -4 * 18 = 36 + 288 = 324
*7) 21² - 4 * 18 * 5 = 441 -360 = 81
8) -1² - 4 * 2 * -10 = 1 + 80 = 81
9) 13² - 4 * 6 * -8 = 169 + 192 = 361
10) -5² - 4 * 12 * -2 = 25 + 96 = 121
Объяснение:
D = b²-4ac
