Предмет: Алгебра, автор: arinamerkulova200957

-(х+2)²+4=0
решите через замену пожалуйста
по примеру как на фото ​

Приложения:

Ответы

Автор ответа: aidadujsembekova567
0

-(x+2)+4=0

4-(x+2)2=0

(2-(x+2))x(2+(x+2)).

2-x-2x(2+x + 2 ) = 0

− x x (2+x+2) =0

х(4 x)=1 -XX4+x)=0

xx(4+x)=0

-х×(4-х)=0

x×x(4+x)= 0

x=0

4+x=0

x=0

X=-4

x1 4 X2 = 0


arinamerkulova200957: мы не проходили такое,это 14 параграф,а тут через замену нужно
Автор ответа: Universalka
0

\displaystyle\bf\\-(x+2)^{2} +4=0\\\\-(x+2)^{2} =-4 \ |\cdot (-1)\\\\(x+2)^{2} =4\\\\t^{2} =4\\\\t_{1} =-2\\\\t_{2} =2\\\\x+2=-2 \  \ \Rightarrow \  \ x_{1} =-4\\\\x+2=2 \  \ \Rightarrow \  \ x_{2} =0\\\\Otvet \ : \ (-4 \ ; 0) \  \ , \  \ (0 \ ; \ 0)    - нули функции

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