(3х+1)(3х+1)-(3х-2)(2+3х)=17 решите уравнение. Created by VasilisaVolk2002. algebra-ru

(3х+1)(3х+1)-(3х-2)(2+3х)=17 решите уравнение...

VasilisaVolk2002 @VasilisaVolk2002

July 2022 1 13 Report

(3х+1)(3х+1)-(3х-2)(2+3х)=17 решите уравнение

Answers & Comments

witch2

Verified answer

(3х+1)(3х+1)-(3х-2)(2+3х)=17
раскроем скобки по этапно
(3х^2 +3х+3х+1) - (6х+9х-4-6х) = 17
(3х^2 +6х+1) - (9х-4) = 17
3х^2 +6х+1 - 9х+4 = 17
3х^2 + 3х +5=17
перенесём всё в одну сторону с противоположным знаком, приравниав к нулю
3х^2 + 3х +5-17 = 0
3х^2 + 3х -12 = 0 /:3
х^2 + х -4 = 0
Д = 1^2 - 4*1*(-4) = 1+8 = 9 = 3^3
х1 = -1+3 / 2 = 2/2 = 1
х2 = -1-3 / 2 = -4/2 = -2

2 votes Thanks 3

Answers & Comments

Verified answer

kak vy obyasnite nazvanie rasskaza chehova zloumyshlennik pozhalujsta poyasnite

v treugolnike abc provedena bissektrisa ak najdite ugol b esli ugol c 33 grad

50 ballovradius opisannoj okolo pryamougolnogo treugolnika okruzhnosti raven 17

radius vpisannoj v pryamougolnyj treugolnik okruzhnosti raven 2 smsumma katetov

1b 2a2 22a b2 34a3b2 vypolni dejstviya 1 m212m26 264 16b

help me hotya by odin nomer

cuso44 indeks umnozhit na 5h22 eto indekso vychislit mri zhelateno obyasnit

3h5 h22 h2h reshit uravnenie

2b1 v kvadrate 4b uprostit vyrazhenie

1 dan treugolnik abc bc raven ba bh vysota i nravna 6 as ravno 16 sm nuzhno

рекомендуемые вопросы

Helpful Links

Helpful Social