Предмет: Алгебра, автор: exporius81

Нужно решить уравнение способом алгебры 7 класса, помогите пожалуйста!
(x²-2)(x-5)+(x²+2)(x+5)=22​

Ответы

Автор ответа: anuapolina08
0

Розв'язок:

(x²-2)(x-5)+(x²+2)(x+5) = 22

x³-5x²-2x+10+(x³+5x²+2x+10)-22 = 0

x³+x³-5x²+5x²-2x+2x+20-22 = 0

2x³-2 = 0

2(x³-1) = 0

x³-1 = 0

x³ = 1

x = ³√1

x = 1

Відповідь: 1.

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