а)25x^{2}-16=0,б)3x^{2}-15х=0,в)5x^{2}+20=0А4.x^{2}-27=0,б)4x^{2}=12...

romantimorshin @romantimorshin

July 2022 1 12 Report

а)25x^{2}-16=0,б)3x^{2}-15х=0,в)5x^{2}+20=0

А4.x^{2}-27=0,б)4x^{2}=12

Answers & Comments

dtnth

Verified answer

$25x^2-16=0$
$25x^2=16$
$x^2=\frac{16}{25}$
$x_1=-\sqrt{\frac{16}{25}}=-\frac{4}{5}$
$x_2=\sqrt{\frac{16}{25}}=\frac{16}{25}$

$3x^2-15x=0$
$3x(x-5)=0;$
1) $3x=0$
$x_1=0$
2) $x-5=0$
$x=0+5$
$x_2=5$

$5x^2+20=0$
$x^2+4=0$
$x^2=-4; -4$
действительных решений нет

$x^2-27=0$
$x^2=27$
$x_1=-\sqrt{27}=-3\sqrt{3}$
$x_2=\sqrt{27}=3\sqrt{3}$

$4x^2=12$
$x^2=12:4$
$x^2=3$
$x_1=-\sqrt{3}$
$x_2=\sqrt{3}$

0 votes Thanks 2

More Questions From This User See All

romantimorshin July 2022 | 0 Ответы

politicheskij lider v finlyandii v 1930 gody srochno

romantimorshin July 2022 | 0 Ответы

esli pri ravnomernom pryamolinejnom dvizhenii telo za 5s peremeshaetsya na 25 mto k

romantimorshin July 2022 | 0 Ответы

ochen proshupomogite pozhalujsta4101afe006fe1cd06551b758b6588257 5398

romantimorshin July 2022 | 0 Ответы

chmozhno li rassmatrivat poezd kak materialnuyu tochku

romantimorshin July 2022 | 0 Ответы

1pri kakih znacheniyah k kvadratnoe uravnenie hv kvadrate 3h12k0 imeet dva k

romantimorshin July 2022 | 0 Ответы

pomogite s resheniem537289909c82ef025c9c555d4d9b39be 9037

romantimorshin July 2022 | 0 Ответы

nam uchitel zadal 2 voprosa chto prinimaet parlament i ministerstvo kakie nor

romantimorshin July 2022 | 0 Ответы

vershiny treugolnik avs lezhat na okruzhnosti ugol a50 gradusovv45chemu ravna

romantimorshin July 2022 | 0 Ответы

predlozhenie domik nad rekuyuv oknah ogonyoksvetloj polosoyu na vodu on lyogkaki

romantimorshin July 2022 | 0 Ответы

morfologicheskij razbor slov svetloj i slova lyogzaranee bolshoespasiboesl

рекомендуемые вопросы

rarrrrrrrr August 2022 | 0 Ответы

o chem dolzhny pozabotitsya v pervuyu ochered vzroslye pri organizacionnom vyvoze n

danilarsentev August 2022 | 0 Ответы

est dva stanka na kotoryh vypuskayut odinakovye zapchasti odin proizvodit a zapcha

myachina8 August 2022 | 0 Ответы

najti po grafiku otnoshenie v3v1 v otvetah napisano 9 no nuzhno reshenie

ydpmn7cn6w August 2022 | 0 Ответы

Choose the correct preposition: 1.I am fond (out,of,from) literature. 2.where ar...

millermilena658 August 2022 | 0 Ответы

opredelite kak sozdavalas i kto sozdaval arabskoe gosudarstvo v kracii

MrZooM222 August 2022 | 0 Ответы

ch ajtmanov v rasskaze krasnoe yabloko ispolzuet metod rasskaz v rasskaze opi

timobila47 August 2022 | 0 Ответы

kakovo bylo naznachenie kazhdoj iz chastej vizantijskogo hrama pomogite pozhalujsta

ivanyyaremkiv August 2022 | 0 Ответы

pozhalujsta8b98a56c0152a07b8f4cbcd89aa2f01e 97513

sarvinozwakirjanova August 2022 | 0 Ответы

pomogite pozhalusto pzha519d7eb8246a08ab0df06cc59e9dedb 6631

Helpful Links

Политика конфиденциальности

Правила и условия

Контакты

Helpful Social

Copyright © 2024 SCHOLAR.TIPS - All rights reserved.