Question

Can anyone help me with solving this polynomial question?
Use a horizontal format to find the sum.
(12x^2-x)+11x^3+(-9x^3+x^2-7)

Answer 1

\[(12x^2-x)+11x^3+(-9x^3+x^2-7)\]

Answer 2

is that what you mean?

Answer 3

on it

Answer 4

\[~~~~~~~~~~~~~~~12x^2-x\\
11x^3\\
-9x^3~~+x^2-7\]

Answer 5

oh maybe that is a vertical format

Answer 6

vertical works too

Answer 7

keep going, i'm checking for ur mistakes

Answer 8

vertical is easier

Answer 9

\[(12^{2}-x)+11x ^{3}+(-9x ^{3}+x ^{2}-7)\]

Answer 10

so continuing with satellite's equation, u understand why he made it that way, right?

Answer 11

I was told to combine like terms, and to work it out like it's written. We haven't learned anything about vertical format yet. I still cent seem to answer it correctly haha.

Answer 12

can't*

Answer 13

if u add them all up like that... well its the same but its easier to c cz all the um like terms are lined up

Answer 14

so u know those tiny numbers i forgot wht they are called but whtever those stop numbers from making them into like terms, so when u add those things u basicially make it into vertical and add the numbers in this case

Answer 15

so 11+(-9) for the first one

Answer 16

and so on with the numbers

Answer 17

see wht u get

Answer 18

\[2x ^{3}+13x ^{2}-x-7\]

Answer 19

?

Answer 20

yea

Answer 21

what's basically it

Answer 22

THANK YOU SO MUCHHHHHH