Hello, speedengine!

Answer: .

With "nested" radicals, it often works if we let equalsomething inside.

Let: u - 2)^2\quad\Rightarrow\quad dx \:=\:2(u-2)\,du" alt=" \:=\u - 2)^2\quad\Rightarrow\quad dx \:=\:2(u-2)\,du" />

Substitute: .

Factor out

Factor out

Since , we have: .

. . .