Question

ajutati ma va rog frumos cls a 8​

Answer 1

$f(\sqrt{2}) = \frac{1-2(\sqrt{2})^{2} }{(\sqrt{2})^{2} +1 } = \frac{1-2*2}{2+1} = \frac{1-4}{3}= \frac{-3}{3} = -1$