http://www.mathhelpforum.com/math-he...1&d=1267164367

I know how to begin, take the derivative.

okay that comes out to be around

"5t^4-24t^3"

So I factor out a "t"

"t^3(5t-24)"

then I set equal to "0"

"5t-24=0"

and the answer should be "24/5" but it's wrong. What have I done wrong.