X^7*|X^2+8x+7|<0 ** промежутке [-6;1]

Question

X^7*|X^2+8x+7|<0 на промежутке [-6;1]

Comments

x^7<0 [-6;0)

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x^2+8x+7=0, x_1=-8, x_2=-1

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[-6;-1)U(-1;0)

Answer 1

X⁷·|x²+8x+7|<0, x∈[-6;1],<br>|x²+8x+7|≥0, x∈R, 
x₂+8x+7=0, x₁=-8, x₂=-1,
x⁷<0, x<0, <br>

x∈[-6;-1)U(-1;0)