

InterviewSolution
Saved Bookmarks
1. |
Write (p + 2q + r)2 in expanded form. |
Answer» (p + 2q + r)2 = (p)2 + (2q)2 + (r)2 + 2 (P) (2q) + 2 (2q) (r) + 2(r) (p) = p2 + 4q2 + r2 + 4pq + 4qr + 2rp |
|