\[x² + 3x - 4 = 0\]
\[y = x² + 3x - 4\]
\[x_{b} = - \frac{b}{2a} = - \frac{3}{2} = - 1,5\]
\[y_{b} = 2,25 - 4,5 - 4 = - 6,25\]
\[x\] | \[- 4\] | \[- 3\] | \[- 1,5\] | \[0\] | \[1\] |
---|---|---|---|---|---|
\[y\] | \[0\] | \[- 4\] | \[- 6,25\] | \[- 4\] | \[0\] |
\[Ответ:\ - 4;1.\ \]