Предмет: Алгебра, автор: kirillasecret

Докажите, что при любом целом n значение выражения

(2n-3)^2-(4n-1)(n+6)

^2 это степень
кратно 5

Ответы

Автор ответа: ОльгаГалюткина
1

Объяснение:

= 4n²-12n+9-(4n²+24n-n-6)=4n²-4n²-12n-23n+9+6=-25n+15=5(-5n+3)

5(-5n+3)/5=-5n+3

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