Предмет: Математика, автор: gabagaba853

3) (5 – x)(x + 5) + (x – 5)2 > 0;

Ответы

Автор ответа: Sasha2006Naskovich

1

Ответ:

(-6;2)

Пошаговое объяснение:

25-x²+2x-10>0

15-x²+2x>0

по дискриминанту

Д=2²-4*(-1)*15=64 это 8²

х1= -2+(-)8/(-2)=-6

Х2=2

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