Предмет: Алгебра, автор: dfffffffffg

1. Одна із сторін прямокутника на 5см менша за іншу, його площа 84см2. Знайти сторони прямокутника.
2. Рівняння х2+кх+р=0 має корені 2 і 4. Знайти к
3. Чому дорівнює сума коренів рівняння х2-7х+12=0.
4. Розв’язати рівняння(х-6)(х+6)=-11
5. Розв’язати рівняння х2+5х-6=0.

Ответы

Автор ответа: olya123548555

х2-7х+12=0

(х-6)(х+6)=-11

х2+5х-6=0 вродебы так

dfffffffffg: Спасибо

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