January 2019 1 49 Report
1. Liczbą odwrotną do liczby  \sqrt{10} - 3 jest :

A:  \sqrt{10} + 3
B: - \sqrt{10} - 3
C:3 - \sqrt{10}
D: \frac{1}{3- \sqrt{10} }

2. Liczbą przeciwną do liczby  \sqrt{10} -3 jest

A: \sqrt{10} +3
B:- \sqrt{10} -3
C:3 - \sqrt{10}
D: \frac{1}{ \sqrt{10}-3 }

3.Oblicz

a) ( \sqrt{6+4 \sqrt{2} } + \sqrt{6-4 \sqrt{2} } )^{2}
b) ( \sqrt{7-2 \sqrt{10} } - \sqrt{7+2 \sqrt{10} } )^{2}
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