Place the following in standard quadratic form. (which is (x-h)+k ). The find the vertex, axis, domain, range, and zeroes.
(can be all done with a calculator, no work needed.)
1. f(x) = x^2-8x+16
4. f(x)= -x^2+2x+5
5. f(x)= 4x^2-4x+21
6. f(x)= 2x^2-x+1