So I just got back from my math class, we were going over exponents. Right before we left he gave us a problem and we turned it in, I was just wondering if I got it right. Simplify: (54-3y)3 * (5y-2)2 I got: 512-9y3 * 5y2-4 5-9y3+y2+8 I applied the powers to the parenthesis, then added the two exponents. The addition of the exponents is here: http://www.wolframalpha.com/input/?i=%2812-9y^3%29+%2B+%28y^2+-+4%29 However when I just pop the original problem into wolfram alpha I get: http://www.wolframalpha.com/input/?i=%28%285^%284-3y%29%29^3%29+*+%28%285^%28y-2%29%29^2%29 58-7y So I guess I have two questions. First is my answer right? Second how did Wolfram come up with that answer?