# Thread: [SOLVED] Find the range of this function using algebra

1. ## [SOLVED] Find the range of this function using algebra

$[(x-2)^2]-9, x is greater than or equal to 4$
$[(x-2)^2]-9 = A$
$x^2-4x-5=A$
$(x+1)(x-5)=A$
that's how far i got...

/edit never mind I figured it out.