Помогите решить плизз срочно надо. Created by bbbbbbbbbb777. algebra-ru

1a)x>0log²(2)x+2*1/2(log(2)x-2=0log(2)x=aa²+a-2=0a1+a2=-1 U a1*a2=-2a1=-2⇒log(2)x=-2⇒x=1/4a2=1⇒log(2)x=1⇒x=2Ответ x=1/4;x=2b)Возведем в квадрат3x²+2x-12=43x²+2x-16=0D=4+192=196x1=(-2-14)/6=-8/3x2=(-2+14)/6=2Ответ x=-2 2/3;x=22{x²-y²=16⇒(x+y)(x-y)=16⇒x-y=16:8⇒x-y=2{x+y=8прибавим2x=10x=5y=8-5y=3Ответ (5;3) Новые вопросы в Алгебра Знайти рiвняння лінії, що проходить через точку (2:2), якщо кутовий коефіцієнт дотичноï рiвний 4x³ - 3x² + 2x-5. даю 40 балів користуючись графіком функції вкажіть проміжки де функція набуває найменшого значиня Найдите первый член геометрической прогрессии (с в степени n), знаменатель которой равен g, если c5=g=2/3; c4=8; c7=-64 користуючись графіком функції вкажіть проміжки де функція набуває додатних значинь Найдите знаменатель геометрической прогрессии (b в степени n), если b1=10000, b6=0,1; b3=1, b5=1/4 Обчислити інтеграли: Даю 40 балів! Пожалуйста помогите даю вам 40 баллов и подпишусь. Фігура, обмежена лініями y² = 4x, y=0, x=4 обертається навколо осі Ох. Знайти об'єм утвореного тiла обертання. даю 40 балів Знайти роботу, яку потрібно виконати для стиску пружини на 8 см, якщо для її стиску на 0,01 м потрібна сила 10 H даю 40 балів Первый член геометрической прогрессии b1=1/16, а знаменатель g=-2. Найдите b5 и b9 Предыдущий Следующий Вместе мы знаем больше Этот сайт использует cookies Политика Cookies . Вы можете указать условия хранения и доступ к cookies в своем браузере. 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Помогите решить плизз срочно надо...

bbbbbbbbbb777 @bbbbbbbbbb777

March 2022 1 36 Report

Помогите решить плизз срочно надо

Answers & Comments

sedinalana

Verified answer

1
a)x>0
log²(2)x+2*1/2(log(2)x-2=0
log(2)x=a
a²+a-2=0
a1+a2=-1 U a1*a2=-2
a1=-2⇒log(2)x=-2⇒x=1/4
a2=1⇒log(2)x=1⇒x=2
Ответ x=1/4;x=2
b)
Возведем в квадрат
3x²+2x-12=4
3x²+2x-16=0
D=4+192=196
x1=(-2-14)/6=-8/3
x2=(-2+14)/6=2
Ответ x=-2 2/3;x=2
2
{x²-y²=16⇒(x+y)(x-y)=16⇒x-y=16:8⇒x-y=2
{x+y=8
прибавим
2x=10
x=5
y=8-5
y=3
Ответ (5;3)