Решите графически уравнение: -x^2=2x-3.

Question

Вопрос:

Ответ:

Accepted Answer

\[- x^{2} = 2x - 3\]

\[\left\{ \begin{matrix} y = - x^{2}\text{\ \ \ \ } \\ y = 2x - 3 \\ \end{matrix} \right.\ \]

\[y = - x²\]

\[x\]	\[- 2\]	\[- 1\]	\[0\]	\[1\]	\[2\]
\[y\]	\[- 4\]	\[- 1\]	\[0\]	\[- 1\]	\[- 4\]

\[y = 2x - 3\]

\[x\]	0	\[1\]	\[- 3\]
\[y\]	\[- 3\]	\[- 1\]	\[- 9\]

\[(1):\ \ (1; - 1);\]

\[(2):\ \ ( - 3;\ - 9).\]

\[Ответ:x_{1} = 1;\ \ x_{2} = - 3.\]