MATH SOLVE

4 months ago

Q:
# ugh please helpppp(;What is the sum of the polynomials?(–x2 + 9) + (–3x2 – 11x + 4)Can someone help me by explaining it, I know that the answer is "-4x2 - 11x + 13" but I don't know how to get that answer, please help asap (:

Accepted Solution

A:

what you do is you add the like terms. so everything that has the same coefficient (the letter attached to the number) is a like term

so you add the numbers for each like term together because you have a + in between the polynomials

so -x2 (im guessing this is x squared?) and -3x2 are like terms. if you add the numbers, thats -1 and -3 (if there's not a number attached to the term it's just a 1) which is -4 and if you attach that back to the like term it's -4x2

-11x doesn't have a like term so you keep it how it is

9 and 4 are like terms, if you add them you get 13

all together, that's -4x2 -11x +13

if that still doesn't make sense, tell me and i'll try to help more!!

so you add the numbers for each like term together because you have a + in between the polynomials

so -x2 (im guessing this is x squared?) and -3x2 are like terms. if you add the numbers, thats -1 and -3 (if there's not a number attached to the term it's just a 1) which is -4 and if you attach that back to the like term it's -4x2

-11x doesn't have a like term so you keep it how it is

9 and 4 are like terms, if you add them you get 13

all together, that's -4x2 -11x +13

if that still doesn't make sense, tell me and i'll try to help more!!