I dont know if this is right...
i need inverse function of g(x)= -2(x+3)^2 +8 (-5less than or equal to x less than or equal to -3)
so i got... x= -2(y+3)^2 +8
square root both sides gives g-1(x)= √ -1/2(x-8)-3
but this seems horribly wrong, - under a root and how do i find the domain from that??