\(-\frac{3}{8}-\left(-\frac{1}{2}\right)^2-0,25\)
\(=-\frac{3}{8}-\frac{1}{4}-\frac{1}{4}\)
\(=-\frac{3}{8}-\frac{2}{4}=-\frac{3}{8}-\frac{1}{2}\)
\(=-\frac{3}{8}-\frac{4}{8}=\frac{-7}{8}\)
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