Question

Помогите пожалуйста!!!! СРОЧНО!!! ДАЮ 30 баллов!!!

Answer 1

Ответ:

-13.4

Объяснение:

$D = p^{2} - 4*34 = p^{2} - 136\\\\x_{1} = \frac{-p - \sqrt{p^{2} - 136} }{2} \\\\x_{2} = \frac{-p + \sqrt{p^{2} - 136} }{2}\\\\\\\\frac{-p + \sqrt{p^{2} - 136}}{2} = 10\\-p + \sqrt{p^{2} - 136} = 20\\\sqrt{p^{2} - 136} = 20+p\\p^{2} - 136 = 400 + 40p + p^{2} \\40p = -536\\p = -13.4\\\\\frac{-p-\sqrt{p^{2}-136 } }{2} = 10\\-p - \sqrt{p^{2}-136} = 20\\\sqrt{p^{2}-136} = -p-20\\p^{2}-136 = p^{2}+40p+400\\p = -13.4$