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KaterinaKarolis438
@KaterinaKarolis438
October 2021
1
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неравность: 3х²-15х≤0; х²+14х+49>0
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ivirinka
3^x2-15x<_0
x(3x-15)<_0
x<_0 3x-15<_0
3x<_15
x<_5
x^2+14x+49>0
D=196-4*49=0
x=7
2 votes
Thanks 1
KaterinaKarolis438
спасибо большое, а что означают "_0"?
sorry6
больше или равно
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Answers & Comments
x(3x-15)<_0
x<_0 3x-15<_0
3x<_15
x<_5
x^2+14x+49>0
D=196-4*49=0
x=7