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Автор - leones98

Помогите решить!!!!неравенство

Ответ

Автор - MrLyanda
5x²-11x-5<7x²
-2x²-11x-5<0
2x²+11x+5>0
D=121-4*2*5=81
x1=(-11+9)/4=-1/2
x2(-11-9)/4=-5
 x ∈ (-∞;-5) U (-1/2;∞)

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