Автор - milenchik1234556

-2x^2+5x+1=-x^2+4x+(3-x^2)

Ответ

Автор - Randy228
-2x²+5x+1=-x²+4x+(3-x²)
-2x²+5x+1=-x²+4x+3-x²
5x+1=4x+3
5x-4x=3-2
x=2

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