Determine the integral by making an appropriate substitution

integral of 8x cuberoot srqt(4x^2-9) dx

let u= 4x^2-9
du= 8x dx

I do not know what to do now

1 answer

So is it
"cuberoot" or "srqt" or both?
and is the 8x in the denominator, or is it "8 multiply..."?