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taybarnes3 taybarnes3
  • 24-11-2014
  • Mathematics
Answered

How do you work this out?

How do you work this out? class=

Verified Answer :

konrad509
konrad509 konrad509
  • 24-11-2014

\((14x^2-9)+(11x+6)=\\ 14x^2+11x-3\)

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Uzi Uzi
  • 24-11-2014

The answer is H because you cannot add together something that is x^{2}, but you can add together -9 and 6 which would make the equation 14x^{2} + 11x - 3. The 11x has + because it is not stated whether it is positive or negative when added.
The student who picked g is wrong because you cannot add together the two x's with coefficients because one has an exponent and the other does not.

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