Найдите меньший корень уравнения. 2x(x+1)=4x^2-7. Created by evgeniya97tjule. matematika-ru

2x(x+1)=4x²-72x²+2x=4x²-72x²+2x-4x²+7=0-2x²+2x+7=02x²-2x-7=0 наим корень "x1"

Найдите меньший корень уравнения. 2x(x+1)=4x^2-7...

evgeniya97tjule @evgeniya97tjule

July 2022 2 3 Report

Найдите меньший корень уравнения.
2x(x+1)=4x^2-7

Munkush

Verified answer

2x(x+1)=4x²-7
2x²+2x=4x²-7
2x²+2x-4x²+7=0
-2x²+2x+7=0
2x²-2x-7=0

$x= \frac{-(-2)б \sqrt{(-2)^2-4*2*(-7)} }{2*2}$
$x= \frac{2б \sqrt{60} }{4}$

$x= \frac{2б2 \sqrt{15} }{4}$

$Answer \\ x1= \frac{1- \sqrt{15} }{2} \\ x2= \frac{1+ \sqrt{15} }{2}$
наим корень "x1"

0 votes Thanks 0

sedinalana

Verified answer

2x²+2x=4x²-7
4x²-7-2x²-2x=0
2x²-2x-7=0
D=4+56=60
x1=(2-2√15)/4=0,5-0,5√15 наименьший
x2=0,5+0,5√15

0 votes Thanks 0

Answers & Comments

Verified answer

Verified answer

tex]...

tex]...

odna iz storon parallelogramma ravna 21 a perimetr raven 123 najti dlinu storo

najdite summu vseh kornej uravneniya 5h 34

tex]...

tex]...

v vash druzhnyj kollektiv prihodit novichok on schitaetsya prekrasnym specialist

vam predlozheno zapolnit anketu posvyashennuyu preimushestvam samomenedzhmenta kaki

chto iz perechislennogo sostavlyaet naibolee shirokoe ponyatie kultura 1 uroven

dlya planirovaniya pribyli predpriyatiya mogut byt ispolzovany metody pryamogo sche

рекомендуемые вопросы

Helpful Links

Helpful Social