Предмет: Алгебра, автор: kavardinanina

Упростите выражение
( x − 5 ) ^2 − x ( 10 + x ) и найдите его значение при x = − 1 20 . В ответ запишите полученное число

Ответы

Автор ответа: Матов

0

$(x-5)^2-x(10+x)=x^2-10x+25-10x-x^2=\25-20x\ 25-20*frac{-1}{20}=26$

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