Ответ:
[tex](3a-5)*(a+4)=3a^{2} +12a-5a-20=3a^{2} +7a-20[/tex]
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Ответ:
[tex](3a-5)*(a+4)=3a^{2} +12a-5a-20=3a^{2} +7a-20[/tex]