Reken uit
- \(-\sqrt{2}\cdot\sqrt{162}\)
- \(\sqrt{6}\cdot\sqrt{150}\)
- \(-\sqrt{6}\cdot\sqrt{726}\)
- \(\sqrt{3}\cdot\sqrt{75}\)
- \(-\sqrt{10}\cdot\sqrt{810}\)
- \(\sqrt{10}\cdot\sqrt{490}\)
- \(-\frac{\sqrt{891}}{\sqrt{11}}\)
- \(\frac{\sqrt{450}}{\sqrt{2}}\)
- \(\sqrt{10}\cdot\sqrt{90}\)
- \(-\sqrt{2}\cdot\sqrt{50}\)
- \(\sqrt{3}\cdot\sqrt{48}\)
- \(-\sqrt{5}\cdot\sqrt{20}\)
Reken uit
Verbetersleutel
- \(-\sqrt{2}\cdot\sqrt{162}=-\sqrt{2 \cdot 162}=-\sqrt{2 \cdot 2 \cdot 81}=-\sqrt{2 \cdot 2} \cdot \sqrt{81}=-2\cdot9=-18\)
- \(\sqrt{6}\cdot\sqrt{150}=\sqrt{6 \cdot 150}=\sqrt{6 \cdot 6 \cdot 25}=\sqrt{6 \cdot 6} \cdot \sqrt{25}=6\cdot5=30\)
- \(-\sqrt{6}\cdot\sqrt{726}=-\sqrt{6 \cdot 726}=-\sqrt{6 \cdot 6 \cdot 121}=-\sqrt{6 \cdot 6} \cdot \sqrt{121}=-6\cdot11=-66\)
- \(\sqrt{3}\cdot\sqrt{75}=\sqrt{3 \cdot 75}=\sqrt{3 \cdot 3 \cdot 25}=\sqrt{3 \cdot 3} \cdot \sqrt{25}=3\cdot5=15\)
- \(-\sqrt{10}\cdot\sqrt{810}=-\sqrt{10 \cdot 810}=-\sqrt{10 \cdot 10 \cdot 81}=-\sqrt{10 \cdot 10} \cdot \sqrt{81}=-10\cdot9=-90\)
- \(\sqrt{10}\cdot\sqrt{490}=\sqrt{10 \cdot 490}=\sqrt{10 \cdot 10 \cdot 49}=\sqrt{10 \cdot 10} \cdot \sqrt{49}=10\cdot7=70\)
- \(-\frac{\sqrt{891}}{\sqrt{11}}=-\sqrt{ \frac{891}{11}}=-\sqrt{ 81}=-9\)
- \(\frac{\sqrt{450}}{\sqrt{2}}=\sqrt{ \frac{450}{2}}=\sqrt{ 225}=15\)
- \(\sqrt{10}\cdot\sqrt{90}=\sqrt{10 \cdot 90}=\sqrt{10 \cdot 10 \cdot 9}=\sqrt{10 \cdot 10} \cdot \sqrt{9}=10\cdot3=30\)
- \(-\sqrt{2}\cdot\sqrt{50}=-\sqrt{2 \cdot 50}=-\sqrt{2 \cdot 2 \cdot 25}=-\sqrt{2 \cdot 2} \cdot \sqrt{25}=-2\cdot5=-10\)
- \(\sqrt{3}\cdot\sqrt{48}=\sqrt{3 \cdot 48}=\sqrt{3 \cdot 3 \cdot 16}=\sqrt{3 \cdot 3} \cdot \sqrt{16}=3\cdot4=12\)
- \(-\sqrt{5}\cdot\sqrt{20}=-\sqrt{5 \cdot 20}=-\sqrt{5 \cdot 5 \cdot 4}=-\sqrt{5 \cdot 5} \cdot \sqrt{4}=-5\cdot2=-10\)