qqp question1: Mathematical Puzzles: What is () + () + () = 30 using 1,3,5,7,9,11,13,15? question2: Is this an acceptable factorization of [math] \frac{2}{3}b^5-\frac{1}{6}b^3+\frac{4}{9}b^2-1[/math]? Why or why not?