text: x^2-2x+5\nthe table will be\nx=  -15  -10  -5  0  5  10  15\ny=  260 125 40  5 20 85  200\nplot now taking a suitable scale\n\nif you want you can have smaller values\n\nx=  -3   -2   -1   0   1   2   3\ny=  20  13   8   5   4   5   8