Предмет: Алгебра, автор: Boni200758

Решите уравнение:
(х+1)²-(х-2)(х+2)=7
(25-х)²+25х>х²
Помогите пожалуйста

Ответы

Автор ответа: Аноним
0

Ответ:

Объяснение:

(x+1)²-(x-2)(x+2)=7

x²+2x+1-x²+4=7

2x=2

x=2/2=1

(25-x)²+25x>x²

25²-50x+x²+25x>x²

25x<25²

x<25

x∈(-∞; 25)

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