\[\boxed{\mathbf{597\ (597).\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[1)\ \sqrt{x} = - x - 1\]
\[y = \sqrt{x}\ \]
\[x\] | \[0\] | \[1\] | \[4\] | \[9\] |
---|---|---|---|---|
\[y\] | \[0\] | \[1\] | \[2\] | \[3\] |
\[y = - x - 1\]
\[x\] | \[1\] | \[- 1\] |
---|---|---|
\[y\] | \[- 2\] | \[0\] |
\[Ответ:нет\ корней.\]
\[2)\ \sqrt{x} = 2 - x\]
\[y = \sqrt{x},\ \ \]
\[y = 2 - x\]
\[x\] | \[1\] | \[2\] |
---|---|---|
\[y\] | \[1\] | \[0\] |
\[Ответ:x = 1.\]
\[3)\ \sqrt{x} = \frac{1}{x}\]
\[y = \sqrt{x},\ \ \]
\[y = \frac{1}{x}\]
\[x\] | \[1\] | \[2\] | \[- 1\] | \[- 2\] |
---|---|---|---|---|
\[y\] | \[1\] | \[0,5\] | \[- 1\] | \[- 0,5\] |
\[Ответ:x = 1.\]
\[\boxed{\mathbf{5}\mathbf{9}\mathbf{7}\mathbf{\text{.\ }}Еуроки\ - \ ДЗ\ без\ мороки}\]
\[1)\ \sqrt{3 + 2\sqrt{2}} = \sqrt{1 + 2\sqrt{2} + 2} =\]
\[= \sqrt{\left( 1 + \sqrt{2} \right)^{2}} = 1 + \sqrt{2}\]
\[2)\ \sqrt{7 + 4\sqrt{3}} = \sqrt{4 + 4\sqrt{3} + 3} =\]
\[= \sqrt{\left( 2 + \sqrt{3} \right)^{2}} = 2 + \sqrt{3}\]
\[3)\ \sqrt{11 + 2\sqrt{30}} =\]
\[= \sqrt{6 + 2\sqrt{30} + 5} =\]
\[= \sqrt{(\sqrt{6} + \sqrt{5})²} = \sqrt{6} + \sqrt{5}\]