Question

Combine the like terms to simplify the expression:



9 + 3 + 17xy2 + 8y3 + 10x –13xy2 – 9x – 6y3



A.


2y6 + 4x2y2 + 10x + 12


B.


2y3 – 4xy2 – 3x + 12


C.


2y3 + 4xy2 + x + 12


D.


2y3 + 4xy2 + 10x + 9

Answer 1

Like terms have exactly the same letters...

9 + 3 + 17xy^2 + 8y^3 + 10x - 13xy^2 - 9x - 6y^3
so lets combine like terms..
17xy^2 - 13xy^2 = 4xy^2
8y^3 - 6y^3 = 2y^3
10x - 9x = x
9 + 3 = 12

so we have :
4xy^2 + 2y^3 + x + 12...re-arranged and it would be C