Activity 5: The Simplest of Them All Directions: Express the given algebraic expression to its simplest form. Write your answer on the space provided for each number. 45a2b 1. 30 ab 4a-1 2. 1-4a 12a2-21a 3. - 12 2-28a 4x2-9 4. 8x3-27 2a2-2 5. 2a2+4a-6​