328
punti
Livello 1
* 9*a + 9*b + 3*a^2 - 3*b^2 + (3/4)*(a + b)^2 =
= 9*(a + b) + 3*(a^2 - b^2) + (3/4)*(a + b)^2 =
= 9*(a + b) + 3*(a + b)*(a - b) + (3/4)*(a + b)*(a + b) =
= (9 + 3*(a - b) + (3/4)*(a + b))*(a + b) =
= (3/4)*(5*a - 3*b + 12)*(a + b)
http://www.wolframalpha.com/input?i=factor+9*a--9*b--3*a%5E2-3*b%5E2--%283%2F4%29*%28a--b%29%5E2
57798
punti
Genius I