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Mathematics 8 Online
OpenStudy (anonymous):

Add: (3x4 + x2 + 2) + (9x4 - x2 + x) A. 12x8 + x4 + x + 2 B. 12x8 + x + 2 C. 12x4 + x + 2 D. 27x4 - x2 + x + 2

jimthompson5910 (jim_thompson5910):

What do you get when you add 3x^4 and 9x^4?

jimthompson5910 (jim_thompson5910):

if you're not sure, let me know

OpenStudy (anonymous):

no sure :(

jimthompson5910 (jim_thompson5910):

in order to add 3x^4 to 9x^4, we just add the numbers that sit in front of the variables in this case, we add 3 to 9 to get 3+9 = 12 So 3x^4 + 9x^4 = 12x^4

jimthompson5910 (jim_thompson5910):

so what happens when we add x^2 to -x^2 ?

OpenStudy (anonymous):

OH ITS C!! i got it, im basically asking for answers because im checking my work right now and i have little time to do it

jimthompson5910 (jim_thompson5910):

ok let me know what you got next time then if you're not sure, then just ask

jimthompson5910 (jim_thompson5910):

and yes, the answer is C

OpenStudy (anonymous):

:) thx and i will :)

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