Предмет: Алгебра, автор: lololoshka6143

задания ........ .......​

Приложения:

Ответы

Автор ответа: nazgul2606
1

Ответ:

Объяснение:

Вот что смогла

Приложения:

lololoshka6143: спасибо большое))
Автор ответа: Аноним
0

1)  a)(4y^2+15y)-(17y-y^3)=4y^2+15y-17y+y^3=y^3+4y^2-2y

    б)2a(3a-b+4)=6a^2-2ab+8a

2) a)2ab-ab^2=ab(2-ab)

    б)2x^2+4x^6=2x^2(1+2x^4)\\

3)

5(x-3)=14-2(7-2x)\\5x-15=14-1444x\\x=15

4)

x+y+z=56\\y=x+12\\z=2x\\x+x+12+2x=56\\4x=44\\x=11\\y=23\\z=22

5)

\frac{3-x}{3}=\frac{x+1}{2} -\frac{3x}{4} \\4(3-x)=6(x+1)-3(3x)\\12-4x=6x+6-9x\\-4x+9x-6x=6-12\\x=6

В третьём там опечатка. вмето -1444х там -14+4х

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