Okay, if then and so but what happened to the "dx"? if then so [tex]dx= (3u^2+ 6u+ 3)du
The best way to get a cube root (though I dislike it my self!) is "\sqrt[3]{x}" gives . I have enough trouble with people who mistake for a square root without Latex reinforcing it! Your "^3\sqrt{x}" is a good substitute.
Am I close? Wolframalpha comes up with a different method. Thanks.
How do I get the cube root in Latex?