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July 2022 1 5 Report

Найдите действительные значения x при которых квадратичная функция y=x^2-x-3 принимает значение равное -13/4

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flower454

Ответ:

$y = {x}^{2} - x - 3\\y = {( -1 3)}^{2} + 13 - 3 \\ y = 169 + 10 \\ y = 179 \\ \\ \\ 4 = {x}^{2} - x - 3 \\ {x}^{2} - x - 7 = 0 \\ d = 1 -28 = 29 \\ x1 = \frac{1 + \sqrt{29} }{2} \\ x2 = \frac{1 - \sqrt{29} }{2}$

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vychislite funkciyu y4x20 pri znacheniyah x kratnyh na 3 v otrezke 100100 pr

ukazhite ryad imen sushestvitelnyh kotorye imeyut formu tolko mnozhestvennogo chisl

ukazhite ryad imen sushestvitelnyh kotorye imeyut formu tolko edinstvennogo chisla

ukazhite ryad s oshibkoj v opredelenii mnozhestvennogo chisla imen sushestvitelnyha

v kakoj cvet okrashivaetsya fenolftalein v sernoj kislote

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