which expresses the polynomial in standard form?
12x^3+5+5x^2-6x^2+3x^3-2-x

A. 15x^6-11x^4-x+7
B. 15x^3-x2-x+3
c. 15x^5-3x^2-x+3
D. 15x^3+x^2-x+3

Question

which expresses the polynomial in standard form?
12x^3+5+5x^2-6x^2+3x^3-2-x

A. 15x^6-11x^4-x+7 
B. 15x^3-x2-x+3
c. 15x^5-3x^2-x+3
D. 15x^3+x^2-x+3

yoloshroom · Answer

Hey there :) gimme a min to solve it and ill show you how to do it ;)

anonymous · Answer

Okay awesome thank you :)

yoloshroom · Answer

alright so i believe it just wants it simplified. so if you do that you'll get 15x^3-x^2-x+3

yoloshroom · Answer

do you understand how to get that?

anonymous · Answer

Not really. Sorry im terrible at this.

yoloshroom · Answer

Alright so,

yoloshroom · Answer

We're just simplifying the problem :) 
everything that is 12x^3 for example has to be added/subtracted with each other. and so on with each "Like term" in the problem above.
So 12x^3 and 3x^3 are added together since they're both positive :)

anonymous · Answer

Ohh okay I think i get it :) Thank you. Do you think you could help me out on a few more problems?

anonymous · Answer

which expression is equivalent to this expression?
(5x^2-4x+5)-(3x^2-6x+2)

A. 2x^2+2x+3
B. 15x^2-10x+7
C. 2x^2-2x+3
D. 2x^2-10x+7