Question

Find the sum of 7a^3+14a+12 and -6a^3+12a^2-7

Answer 1

How do I solve this? It's a bit different from my last question...

Answer 2

just add the like terms together and then say what do you get?

Answer 3

I had a^3+26a+10 but I know that's not right.

Answer 4

7a^3+14a+12 + -6a^3+12a^2-7
=a^3+12a^2+8a+5

Answer 5

Can you explain how you did that?

Answer 6

yes

Answer 7

7a^3-6a^3=a^3 {both are like terms}

Answer 8

you have only one term 12a^2 and there is no other term with a^2 so,12a^2+0=12a^2

Answer 9

oh but the - in front of 6 is not for subtracting. it wants me to add -6 to 7

Answer 10

14a-6a=8a{again both like terms}

Answer 11

no it wants you to subtract because you have a -ve sign in front of 6

Answer 12

you gotta check for like terms and see their symbols carefully and then you gotta add or subtract accordingly

Answer 13

again 12-5 =7

Answer 14

"find the sum" so 6 is negative. but 7+ negativ 6 is the same as 7 minus 6 right?

Answer 15

yeah

Answer 16

anything more you want to know?

Answer 17

No I'm pretty sure I understand this tyope of question now. I may have another in a second so i'll check that first.

Answer 18

okay

Answer 19

may i have my medal please:P

Answer 20

sure how do i do that

Answer 21

just click on the best response option

Answer 22

just to clarify
-4x^2
-7x^2
x^2
------
-10x^2 assuming i'm adding the polynomials?

Answer 23

correct

Answer 24

ok thanks!!!

Answer 25

welcome!:)are you new here

Answer 26

yes i am lol. i have one (hopefully last for now XD) question for you.

Answer 27

welcome to openstudy!!

Answer 28

say your question

Answer 29

-4x^2+3xy- y^2
-7x^2- xy +6y^2
x^2+4xy-2y^2
---------------
my answer
-10x^2+6xy-(-3y^2)

Answer 30

i think something is wrong with it...

Answer 31

wait

Answer 32

nope its partially correct:)

Answer 33

-10x^2+6xy+3y^2

Answer 34

partially? ok what is the incorrect part?

Answer 35

that -(-3y^2)

Answer 36

ok so it is +3y^2

Answer 37

what is 6-1-2

Answer 38

my school program is telling m there should be one more symbol/digit in there somewhere...

6-1-2 is 3

Answer 39

good

Answer 40

ok well i guess it'll tell me what it's looking for when i send in the answers. but the way you showed me does look right.

Answer 41

nope this is correct but i don't know if you have posted correctly

Answer 42

i think i did. my program likes to mess with me haha

Answer 43

wait i know hat i did XD. I put 6x instead of 6xy. I got it now. Thank you!!!

Answer 44

okay:)

Answer 45

don't get panicked just keep yourself calm:)

Answer 46

before you do maths just sit and breathe in and out deeply from your heart and try to feel your inner core,this will give you immense help and concentration:)