[SOLVED] Algebta (factoring polynomials) 1. The problem statement, all variables and given/known data x^2 * [ (1/2) * (1-x^2)^(-1/2) * (-2x)] + (1 - x^2)^(1/2) * (2x) factor this down. 2. Relevant equations n/a 3. The attempt at a solution -x^3*(1- x^2)^(-1/2) + 2x(1 - x^2)^(1/2) I understand how you get to this part, but I can't get to: x * (2 - 3x^2)/ (sqrt(1 - x^2)) after trying factoring by substitution etc.