Предмет: Алгебра, автор: exbvcz

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

Ответы

Автор ответа: varvar1

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

4x^2+4x+1=2(2x^2+x-3)

4x^2+4x+1=4x^2+2x-6

2x=-7

x=-7/2

x=-3.5

Автор ответа: dtnth

$(2x+1)(2x+1)=2(x-1)(2x+3);\ 4x^2+4x+1=(2x-2)(2x+3);\ 4x^2+4x+1=4x^2+6x-4x-6;\ 4x+1=6x-4x-6;\ 4x+1=2x-6;\ 4x-2x=-6-1;\ 2x=-7;\ x=-frac{7}{2}=-3.5$

ответ: -3.5

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