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neakw
@neakw
July 2022
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sedinalana
Verified answer
Cos2*cos3*(2x²-50)<0
cos2<0,cos3<0⇒2x²-50<0
2(x-5)(x+5)<0
x=5 x=-5
x∈(-5;5)
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neakw
спасибо!
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Answers & Comments
Verified answer
Cos2*cos3*(2x²-50)<0cos2<0,cos3<0⇒2x²-50<0
2(x-5)(x+5)<0
x=5 x=-5
x∈(-5;5)