Use the work below to simplify the expression –5 + b + 2a2 – 3b + 4. 1. Identify like terms: –5 and 4 b and –3b 2. Combine like terms: –5 + 4 = –1 b – 3b = –2b 3. Simplify the expression: What is the expression in its simplest form? –2b – 1 –2b+ 2a2 2a2 + 2b + 1 2a2 – 2b – 1