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Mathematics 13 Online
UkuleleGirl:

Adding and subtracting polynomials.

UkuleleGirl:

\((-2x^2-2x+1)+(-8x^2-7)\)

UkuleleGirl:

@hero

P1n3appl31:

OOOOOOOOO I am interested

UkuleleGirl:

I think I do the x method first.

P1n3appl31:

Don't you have to combine like terms...

UkuleleGirl:

This isn't combine like terms

P1n3appl31:

dang, sorry

P1n3appl31:

-8^x-2^x-2x-7+1... 10^x-2x-6x... eh oh well

UkuleleGirl:

hm?

P1n3appl31:

when I do "^" I usually mean to the power of

UkuleleGirl:

ik...

UkuleleGirl:

but you said -8^x?!

UkuleleGirl:

take the power of x?

P1n3appl31:

negative 8 to the power of x

P1n3appl31:

oh whoops thanks its -8x^2

UkuleleGirl:

0-0 yes

P1n3appl31:

so then my answer is 10x^2 -2x-6

UkuleleGirl:

yes but how did you get that?

P1n3appl31:

-8 subtracted by 2 I got -10 so theres the -10x^2, 2x is just left alone because there are no like terms with that one, and -7+1 is 6

UkuleleGirl:

hmmm okay.

P1n3appl31:

`~mAtH~`

P1n3appl31:

although I think this is algebra

UkuleleGirl:

Yes . algebra 3

P1n3appl31:

noice!

UkuleleGirl:

it says its wrong.....

P1n3appl31:

OOF T-T I am really sorry I got you a wrong answerrrrr

UkuleleGirl:

we all make mistakes

UkuleleGirl:

OH i think you distribute the Plus sign thru the other side of the parenthesis

P1n3appl31:

OH SHOOT I FORGOT ABOUT THAT!!! NUUUUUUU

UkuleleGirl:

okay.

UkuleleGirl:

i'm not sure if we group here or combine like terms

UkuleleGirl:

ok i think we combine like terms

UkuleleGirl:

YES ok i got it. turns out you were right just the 6 should have been negative in the final answer.

P1n3appl31:

the six was negative O-O

UkuleleGirl:

then ig it wasmy bad then.

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