Answer:
B
Step-by-step explanation:
You are combining like terms.
1.) find all of the #x³ and there is only one and that is -x³ so that limits the problem to B or D.
2.) now you find all of the #x² and there are three of them being 10x², -x², and 4x². Now that you have identified them you will add them together to get a sum of 13x²
you don't have to do anymore of the question because D does not have 13x² so it is B.
CAN YOU BE MORE SPECIFIC? SO THAT THE QUESTION CAN GET ANSWERED
See what number both can go into: If you have 2/4 and 1/8 both have a multiple of 8. Since the multiples of 4 are : 4,8 and 8 can go into 8.