Determine the properties of the following quadratic functions.
1. f(x) = -x² + 121
2. f(x) = x² - 2x - 3
3. f(x) = -3x² - 12x
4. f(x) = x² + x-2
5. f(x) = x² + 2x - 24
6. f(x) = (x + 3) - 5
7. f(x) = (x + 5)² - 1
8. y = (x - 3)² + 7
9. y=-(x - 2)² - 1
10. y = (x + 1)² + 1
help me to solve please​