Question

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

Answer 1

Ответ:

-13.4

Объяснение:

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