Предмет: Математика, автор: trrnorrgbsgb

помогите с примерами, только 2 и 3​

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Ответы

Автор ответа: arinaklimova2016
1

Ответ:

Пошаговое объяснение:

2) 49-4x^2=49+x^2+2x

-4x^2=x^2+2x

-4x^2-x^2-2x=0

-5x^2-2x=0

-x*(5x+2)=0

x=0 5x+2=0

x=0 x=-2/5

3) (3x-2)*(2x-1)=(2x+3)*(2x+1)

(3x-2)*(2x-1)-(2x+3)*(2x+1)=0

6x^2-3x-4x+2-(4x^2+8x+3)=0

2x^2-15x-1=0

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