September 2018 1 17 Report

Prosze o rozwiązanie tych zadań

1. \sqrt2*\frac{1}{4}:(-\frac{5}{9})+4,9*\frac{2}{7} =

2. (x-5)*(x-5)=31-(x-4)*(x+4)

3. \frac{x}{9}\geq1-\frac{2-x}{3}

4. \frac{\frac{4}{5}*\frac{4}{5}*1,2}{2-\frac{3}{14}*(-\frac{6}{7)}}=


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