Graph f(x)=x^2+2x-1,x<0; x^2-4x+3,x>=0

$f (x) = {\begin{cases} x^{2} + 2 x - 1, x < 0 \\ x^{2} - 4 x + 3, x \geq 0 \end{cases}$

Graph.

$f (x) = {\begin{cases} x^{2} + 2 x - 1 & x < 0 \\ x^{2} - 4 x + 3 & x \geq 0 \end{cases}$