Question 242421
Minimum value as the parabola is like the letter "U".

dy/dx = 2x-2

So we want the gradient to be 0. 0 = 2x-2

x = 1

So the minimum value is y=1.

The graph confirms this:

{{{ graph( 300, 200, -6, 5, -5, 10, x^2 - 2x + 2) }}}