Question

Combine the like terms to simplify the expression:



4 + 7xy2 + 5y3 + 10x –4xy2 – 8x – 4y3 + 9



A.


y6 + 3x2y2 + 10x + 13


B.


y3 + 3xy2 + 2x + 13


C.


y3 + 3xy2 + 10x + 13


D.


y3 – 3xy2 + 2x + 9

Answer 1

@mathway @200205650

Answer 2

constants: 4+9 = 13 xy^2: 7-4 = 3xy^2 y^3: 5-4 = y^3 x: 10-8 = 2x y3 + 3xy2 +2x +13 (answer B)
am i right

Answer 3

Look at all the terms to see which terms happen more than once. The + or - sign in front of the term tells you whether it's positive or negative. Then add together all the sets of terms which are the same. Put the term with the highest exponent first, then put in the rest of the exponents in descending order.
4+9= 13
7xy2+(-4xy2)= 3xy2
5y3+(-4y3)= y3
10x+(-8x)= 2x

13+3xy2+y3+2x

y3+3xy2+2x+13

Answer 4

it's c

Answer 5

c y3+3xy2+2x+13

Answer 6

oh do you guys agree?

Answer 7

i get 3xy2+y3+2x+13

Answer 8

You're correct. It's B

Answer 9

yeah c y3 + 3xy2 +2x +13

Answer 10

yea B

Answer 11

wait.

Answer 12

OH LOL

Answer 13

yep

Answer 14

yeah i got y3 + 3xy2 +2x +13 and saw c right away xD

Answer 15

i got what looks like c in an odd order
3xy^2+y^3+2x+13

Answer 16

lol