$y=\left(x+2\right)^2-3$y=\left(x+2\right)^2-3

$y=-\left(x+3\right)^2$y=-\left(x+3\right)^2

$y=-\left(x-2\right)^2-3$y=-\left(x-2\right)^2-3

$y=-x^2+3$y=-x^2+3