um, quadratic formula only works for quadratics. you do not have a quadratic in this simplification.

write it this way:

aha! now we have a quadratic! (to see this, replace x^3 with y)

the domain is the set of x-values for which the function is defined. usually the easiest way to find the domain is to find the x-values that don't work, and say the domain is all x-values but those. so, what can x NOT be here?2.find domain of sqrt((x-3)/(x+2))+1

sorry i dont how to begin for this problem