epi

1. Общност
2. Classroom Product Questions and Feedback

3(3^2) + 3^2 = (3 + 1)(3^2) = 4(3^2) = 36 Where is the (3+1) coming from?   Thanks!

1. Общност
2. Study Group

3(3^2) + 3^2 = (3 + 1)(3^2) = 4(3^2) = 36 Where is the (3+1) coming from?   Thanks!