помогите решить пожалуйста. Created by Konovalovapolk. algebra-ru

(4x-9y)/(2√x -3√y) -√y ; x+y =7.A =(4x-9y)/(2√x -3√y) -√y = ( (2√x)² -(3√y)²) / (2√x -3√y) -√y = (2√x -3√y)(2√x +3√y) /(2√x -3√y) -√y = || 2√x ≠3√y || = √ 2√x +3√y -√y =2(√x +√y ) .Преобразуем x+y =7 ⇔(√x+√y )² =7 +2√(xy) ⇒√x+√y =√(7+2√(xy)). A = 2√(7+2√(xy)).*********************{x+y =72 ;√x ≠3√y.⇒x≠63/13 .y ≠28/13Новые вопросы в АлгебраСколькими способами можно рассадить 5 мальчиков и 3 девочки на 8 стульях, стоящих в один ряд, чтобы все девочки не сидели рядом. Пожалуйста, помогите…решить.Реши:t(x)=x+2x²+x-20 при х²+х-20≠03×(a-b-c)+5×(a-b)+3c=8×(a-b)Допоможіть будь ласка!Якщо можна з поступовим поясненнямДякую!m+3 n+3 якщо m>n порівняйте числазависимость y от х задана таблицей. Найдите ее область определения и область значения. Определите, является ли эта зависимость функцией. Постройте гра…фик этой зависимостих -4 -1 3 4 -4у -3 -2 1 -2 3найти производную соs²xНадо решить системы уравнений ( не графичным способом)125a⁸b⁴-20a⁶b⁵______________15a⁵b⁴Упростите помогите пжпжпжпжрж((7^2005)+(7^2004)+8)/((7^2004)+1)ПредыдущийСледующийВместе мы знаем большеЭтот сайт использует cookies Политика Cookies . 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помогите решить пожалуйста...

Konovalovapolk @Konovalovapolk

August 2022 1 13 Report

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Answers & Comments

oganesbagoyan

Verified answer

(4x-9y)/(2√x -3√y) -√y ; x+y =7.
A =(4x-9y)/(2√x -3√y) -√y = ( (2√x)² -(3√y)²) / (2√x -3√y) -√y =
(2√x -3√y)(2√x +3√y) /(2√x -3√y) -√y = || 2√x ≠3√y || = √ 2√x +3√y -√y =2(√x +√y ) .
Преобразуем x+y =7 ⇔(√x+√y )² =7 +2√(xy) ⇒√x+√y =√(7+2√(xy)).
A = 2√(7+2√(xy)).
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{x+y =72 ;√x ≠3√y.⇒x≠63/13 .y ≠28/13