x² - x² + x - x + - = 0
x² + x + = 0
x² + x + = 0
x1/2 = -/2 ± ((/2)² - )½
x1/2 = ± ((/2)² + )½
x1/2 = ± (/4 + )½
x1/2 = ± ( + )½
x1/2 = ± ()½
x1 = +
x2 = -
x1 =
x2 =
y1 = × ² + × +
y1 = + +
y1 =
y2 = × ² + × +
y2 = + +
y2 =
| | | |
x - x = -
x =
x =
y = × ² + × +
y =
|