i need help solving this equation

Question

Perform the following additions and/or subtractions:

(9b²+2b²+b)+(b²+9b+4)

Answer 1

To solve this, you add like terms (i.e., terms with b² can only be added to terms with b², terms with b can only be added to terms with b, constants can only be added to other constants, etc.):

 

(9b² + 2b² + b) + (b² + 9b + 4)

9b² + 2b² + b + b² + 9b + 4

12b² + 10b + 4