Activity 3. Transform each quadratic function into the form y = a(x - 2)2 + k. 1. y=x² - 2x - 1
2. y = 2x2 + 6x + 8
3. y=x2 - 6x +5
4. y=-2x2 + 6x - 5
5. y = 2x2 - 4x + 5​