1. Expand the following sums: 10 2. Write the following in sigma notation. 95 All rights reserved. No part of this material may be reproduced or tr: :lectronic or mechanical including photocopying - without written permission 1 (a) (x+5)($+3)2+($+1)3($1)4 1 22 32 102 (b)s+s+53+-\"+F (C) a3+a5+a9+...+a31 3. Evaluate the following sums 150 (a) 2911+ 2) 120 (b) 2212' 5) (c) 2(22' 1)(2i + 1)