\[\boxed{\mathbf{652\ (652).\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[1)\ 10\sqrt{3} - 5\sqrt{48} + 2\sqrt{75} =\]
\[= 10\sqrt{3} - 20\sqrt{3} + 10\sqrt{3} = 0\]
\[2)\ \left( 3\sqrt{5} - \sqrt{20} \right) \cdot \sqrt{5} =\]
\[= \left( 3\sqrt{5} - 2\sqrt{5} \right) \cdot \sqrt{5} = \sqrt{5} \cdot \sqrt{5} =\]
\[= 5\]
\[3)\ \left( 5 - \sqrt{2} \right)^{2} = 25 - 10\sqrt{2} + 2 =\]
\[= 27 - 10\sqrt{2}\]
\[4)\ \left( \sqrt{18} - \sqrt{3} \right) \cdot \sqrt{2} + 0,5 \cdot \sqrt{24} =\]
\[= \left( 3\sqrt{2} - \sqrt{3} \right) \cdot \sqrt{2} + 0,5\sqrt{24} =\]
\[= 3 \cdot 2 - \sqrt{6} + \sqrt{6} = 6\]
\[\boxed{\mathbf{6}\mathbf{5}\mathbf{2}\mathbf{\text{.\ }}Еуроки\ - \ ДЗ\ без\ мороки}\]
\[Квадратное\ уравнение\] | \[Коэффициенты\ уравнения\] | ||
---|---|---|---|
\[a\] | \[b\] | \[c\] | |
\[7x^{2} - 2x - 19 = 0\] | \[7\] | \[- 2\] | \[- 19\] |
\[- 0,3x^{2} + 6x = 0\] | \[- 0,3\] | \[6\] | \[0\] |
\[\frac{1}{6}x^{2} - 2 = 0\] | \[\frac{1}{6}\] | \[0\] | \[- 2\] |
\[x^{2} + x - 8 = 0\] | \[1\] | \[1\] | \[- 8\] |
\[- x^{2} - x =\] | \[- 1\] | \[- 1\] | \[0\] |
\[2,8x^{2} = 0\] | \[2,8\] | \[0\] | \[0\] |