Ответы на вопрос:
{5-x²-4x≥0 {x+4> 0 x+4> 0⇒x> -4 x²+4x-5≤0 x1+x2=-4 u x1*x2=-5 x1=-5 u x2=1 + _ + - \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ x∈(-4; 1]
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