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demidovadaria28
@demidovadaria28
June 2023
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Розв’яжіть рівняння: х(х – 3) + х(7 – х) = –7;
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Sanya2263
х(х-3)+х(7-х)=–7
х²-3х+7х-х²=–7
4х=–7
х=–7/4
20 votes
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Answers & Comments
х(х-3)+х(7-х)=–7
х²-3х+7х-х²=–7
4х=–7
х=–7/4