anonymous
  • anonymous
Add: (3x4 + x2 + 2) + (9x4 - x2 + x)
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
think of this as "combine like terms"
anonymous
  • anonymous
but is it x4
pooja195
  • pooja195
\[\huge~\rm~ 3x^4 + x^2 + 2 + 9x^4 - x^2 + x\]

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anonymous
  • anonymous
\[3x^4+9x^4=?\]
anonymous
  • anonymous
so it's 12x4?
anonymous
  • anonymous
the first term is, yes
anonymous
  • anonymous
then \[x^2-x^2=?\]
anonymous
  • anonymous
ok the second term is x2
anonymous
  • anonymous
hmm no
anonymous
  • anonymous
what is \[x^2-x^2\]?
anonymous
  • anonymous
ok
pooja195
  • pooja195
Think of it as \[\huge~\rm~1x^2−1x^2\] 1-1=?
anonymous
  • anonymous
that's 0 so the answer is x2 but you guys said no so i'm not sure
pooja195
  • pooja195
They cancel out
anonymous
  • anonymous
so war does that equal
pooja195
  • pooja195
0
pooja195
  • pooja195
Therefore we ignore it
anonymous
  • anonymous
and then it's x2 right?
pooja195
  • pooja195
\[\huge~\rm~(3x^4+9x^4)+(x^2+−x^2)+(x)+(2)\] Ok so we have 12x^4+x+2
anonymous
  • anonymous
none of those are like terms so is that the answer
anonymous
  • anonymous
right?
pooja195
  • pooja195
yep
pooja195
  • pooja195
12x^4+x+2
anonymous
  • anonymous
ok thanks a lot i don't know who to give the medal to

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