Question

Add: (–4 + n – 2n^2) + (2 – 5n – 6n^2)

Answer 1

-8 n^2-4 n-2

Answer 2

Can you walk it through with me? I keep getting stuck.

Answer 3

@LegoMyEgo ... lemme help u..
first of all open the bracket

Answer 4

–4 + n – 2n^2 + 2 – 5n – 6n^2

Answer 5

now bring the terms with n^2 together
and those with n together
and also keep the constant terms together

Answer 6

8n^3?

Answer 7

let me do this step and u see where were u commiting the mistake

Answer 8

-6n^2 -2n^2 -5n +n -4 +2

what i have done is that arranged the terms with simillar power together

Answer 9

-6n^2+2n^2-5n+n+2

Answer 10

u missed -4

Answer 11

-6n^2+2n^2-5n+n+2 -4

Answer 12

-6n^2 - 2n^2 - 5n + n -4 + 2
combine like terms
-6n^2 - 2n^2 = -8n^2
-5n + n = -4n
-4 + 2 = -2
now put them all together and you get : -8n^2 -4n - 2

Answer 13

now solve the simillar terms i.e. terms which have same power..

Answer 14

8n^2+5n^2+-2

Answer 15

where are you getting that from ?

Answer 16

check again...

Answer 17

Where did I mess up?

Answer 18

u messed up while adding the terms with the power 1
i.e. terms with which have "n" at the end

Answer 19

So I don't add them?

Answer 20

while adding those with n squre too

Answer 21

like terms are just like they say....alike.
2n + 3n are like terms.
2n^2 + 3n^2 are like terms
2n + 2n^2 are not like terms
you can only add/subtract them of they are alike

Answer 22

what did u do..?
i suggest u to take a look at texas's comment

Answer 23

Oh I see

Answer 24

I messed up on the like terms....so it would be like Texas said

Answer 25

yeah.. now lets solve it step by step..
first of all add the sums with power n^2

Answer 26

don't forget their signs...

Answer 27

2n^2+2n^2

Answer 28

(–4 + n – 2n^2) + (2 – 5n – 6n^2)
= - 2n^2 - 6n^2 +n - 5n - 4 + 2
=-8n^2 - 4n - 2 (ANS.)

Answer 29

see.. the terms that have n^2 are
-6n^2 and -2n?^2
so what would u get on adding them ??

Answer 30

-8n^2

Answer 31

simple adding guys
(–4 + n – 2n^2) + (2 – 5n – 6n^2)
= - 2n^2 - 6n^2 + n - 5n - 4 + 2
=- 8n^2 - 4n - 2 (ANS.)

Answer 32

yuhoo u are correct @LegoMyEgo ...
now lets add those with n
i.e. -5n and n
add these

Answer 33

-5n^2

Answer 34

way to go LegoMyEgo on the first part....but -5n + n = -4n

Answer 35

why would u write n^2 ???
we are adding not multipling....
and while adding u donot increase the power of the variable...
try again...:D.. u would definitely do it..:D

Answer 36

Oh yeah So now its -8n^2+-4n+2?

Answer 37

-5n-n=-4n?

Answer 38

n is the same as 1n.....so -5n + 1n = -4n and then you have -4 + 2 which is -2.

Answer 39

@LegoMyEgo see this
(–4 + n – 2n^2) + (2 – 5n – 6n^2)
= - 2n^2 - 6n^2 +n - 5n - 4 + 2 [opening the brackets]
=-8n^2 - 4n - 2 (ANS.) [adding -2n^2 and -6n^2= -8n^2.]
[adding n and -5n = -4n ]
[adding -4 and 2= -2]

Answer 40

Okay I see

Answer 41

no u are wrong while adding the constant term..
cos they are -4 + 2
and when u add them u are supposed to write that sign whose number was greater...

Answer 42

I will just ask me teacher.

Answer 43

ask her what ? You do not understand what we just said ?

Answer 44

give it a try @LegoMyEgo ... don't loose hope...

Answer 45

@LegoMyEgo i've solve u the whole ans. which thing u dont understand????

Answer 46

I don't understand the last part

Answer 47

guys.. guys.. guys...!! don't be so rude...!!
someday we even used to get confused with such questions...
isn't it..?
so be patient..

Answer 48

Thank you @gudden

Answer 49

alright the last part then here u go..

Answer 50

@LegoMyEgo
when u add two things u put the sign of the bigger one to the ans
when -4 and 2 are added
as -4 is bigger if u dont consider the sign (4>2)
so when we add both of them then we write the ans with -ive sign cz 4 has -ve sign. SO,
-4 + 2 = -2

Answer 51

- 4 + 2
just solve it..
and tell me how do u solve it..

Answer 52

-2

Answer 53

correct..:D

Answer 54

Okay I get it now. I just got lost for a second. Thank you @gudden

Answer 55

you are welcome.. :D