найдите корни уравнения 2x^2+13x-7=0. Created by guruwesenija. algebra-ru

найдите корни уравнения 2x^2+13x-7=0...

guruwesenija @guruwesenija

July 2022 1 0 Report

найдите корни уравнения 2x^2+13x-7=0

Answers & Comments

fiofionina

Verified answer

Решение:
2x^2 +13x -7=0
x1,2=(-13+-D)/2*2
D=√(169-4*2*-7)=√(169+56)=√225=15
x1,2=(-13+-15)/4
x1=(-13+15)/4=2/4=0,5
x2=(-13-15)/4=-28/4=-7

Ответ: х1=0,5; х2=-7

1 votes Thanks 1

guruwesenija спасиб:3

vstrechaetsya li pejzazh v literaturnyh i muzykalnyh proizvedeniyahrebyat nuzhno 6 p

Answer

guruwesenija July 2022 | 0 Ответы

najdite ploshad trapecii abcd s osnovaniyami ab i cd esli ab21 sm cd17 sm

Answer

guruwesenija July 2022 | 0 Ответы

preved himiki pomogite pridumat zadachi na nahozhdenie massovoj doli chem bolshe

Answer

Answers & Comments

Verified answer

7...

c...

pomogite 18ab227a2b

pomogite pozhalujsta najdite znachenie vyrazheniya 5 22

pomogite pozhalujsta 650 punkt abv help mi rebyatushki 3453432341234453545645

vstrechaetsya li pejzazh v literaturnyh i muzykalnyh proizvedeniyahrebyat nuzhno 6 p

najdite ploshad trapecii abcd s osnovaniyami ab i cd esli ab21 sm cd17 sm

preved himiki pomogite pridumat zadachi na nahozhdenie massovoj doli chem bolshe

рекомендуемые вопросы

Helpful Links

Helpful Social