Найдите: f(10); f(-2); f(0); если f(x)=x^2-8x.

Ответ:

\[f(x) = x^{2} - 8x = x(x - 8)\]

\[f(10) = 10 \cdot (10 - 8) = 10 \cdot 2 =\]

\[= 20;\]

\[f( - 2) = - 2 \cdot ( - 2 - 8) =\]

\[= - 2 \cdot ( - 10) = 20;\]

\[f(0) = 0 \cdot (0 - 8) = 0.\]