Question

(x^2-10x+25)x/x^2-9 < 0
неравенство

Answer 1

(x²-10x+25*x/(x²-9)<0
(x-5)²*x/((x-3)(x+3)<0
-∞_____-_____-3_____+_____0_____-______3_____+______+∞
Ответ: x∈(-∞;-3)U(0;3).