Integrals

[Marierose]

How would i find the integral of

∫ (x+2) √(1-z)

i used substitution and let u=(w-1)^2 and du=2(w-1)
then i did 2∫ (1-w^.5)(w-1)
I am stuck on what to do next. Please Help!

 

[stapel]

You state the integral in terms of two variables, x and z, but then substitute for a third variable, w. With respect to which variable are you integrating?

Thank you.

Eliz.