\[\boxed{\text{1129\ (1129).}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[1)\ y = (2x - 1)\left( 4x^{2} + 2x + 1 \right) - 8x^{3}\]
\[y = 8x^{3} - 1 - 8x^{3}\]
\[y = - 1\]
\(\ \)
\[2)\ y = (x + 1)(x + 4) - (x + 3)^{2}\]
\[y = x^{2} + 5x + 4 - x^{2} - 6x - 9\]
\[y = - x - 5\]
\[x\] | \[- 2\] | \[- 3\] |
---|---|---|
\[y\] | \[- 3\] | \[- 2\] |
\(\ \)
\[y = 2x + 5\]
\[x\] | \[- 1\] | \[- 2\] |
---|---|---|
\[y\] | \[3\] | \[1\] |
\(\ \)
\[\boxed{\text{1129.\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[x^{2} + y^{2} = - 4;\ \ если\ x > 0,\ \]
\[\ то\ x^{2} + y^{2} \neq - 4,\]
\[така\ как\ \ x^{2} > 0;\ \ \ y^{2} \geq 0.\]
\[Следовательно,\ не\ проходит.\]