How do you minimize the following quadratic function over all (real) $\displaystyle x_1 , x_2$:

$\displaystyle p(x_1 , x_2) = 4x_1^2-2x_1x_2+3x_2^2+3x_1-2x_2+1$

Also, I have to somehow write the function in the form of:

$\displaystyle p(x)=x^TKx-2x^Tf+c$

in order to minimize it. How do I find $\displaystyle f$, a constant vector space?