Предмет: Алгебра, автор: andreevakatya57

разложите на множители : 4a^2 - 9b^2 + 6b -1

Ответы

Автор ответа: Rechnung

$4a^2-9b^2+6b-1=4a^2-(9b^2-6b+1)=\\=(2a)^2-((3a)^2-2*3a+1^2)=(2a)^2-(3a-1)^2=\\=(2a+3a-1)(2a-3a+1)=(5a-1)(1-a)$

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