Ответ:
х²+5х+6=0
По теореме Виета:
x1 + x2 = -5
x1 * x2 = 6
x1² + x2² = (x1 + x2)²- 2 *x1 * x2 = (-5)² - 2 * 6 = 25 - 12 = 13
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Ответ:
х²+5х+6=0
По теореме Виета:
x1 + x2 = -5
x1 * x2 = 6
x1² + x2² = (x1 + x2)²- 2 *x1 * x2 = (-5)² - 2 * 6 = 25 - 12 = 13