anonymous
  • anonymous
im suppose to expand using the partial fractions.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
schrodinger
  • schrodinger
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anonymous
  • anonymous
\[\frac{ -5x+4 }{ x^2-16 }\]
anonymous
  • anonymous
@raiders88
anonymous
  • anonymous
Did you factor the denominator?

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anonymous
  • anonymous
yep x-4 and x-4
anonymous
  • anonymous
It's actually (x + 4)(x - 4), from a difference of squares Then you can write this \[\frac{ -5x+4 }{ (x+4)(x-4) }=\frac{ A }{ x+4 }+\frac{ B }{ x-4 }\] Then you have to multiply the whole equation by the denominator on the left side
anonymous
  • anonymous
uhh nope it says that there both -'s so idk and the only part i got right n u is the plus in between and the 4's
anonymous
  • anonymous
ok, that might have been a mistake in the program. do you want solve it this way since it didn't work that way before.
anonymous
  • anonymous
uhh hold up imma look at the video soo il message u when i have a definite answer kk
anonymous
  • anonymous
hey uhh try this site https://www.khanacademy.org/math/algebra2/polynomial_and_rational/partial-fraction-expansion/v/partial-fraction-expansion-1
anonymous
  • anonymous
no offense, I don't need to try khan academy I know how to do this. Your issue is that you factored the denominator wrong. http://www.wolframalpha.com/input/?i=factor+x%5E2-16
anonymous
  • anonymous
ohhh ok ill try this site 2
anonymous
  • anonymous
np and foil these out and you'll see \((x-4)(x-4)=x^2-8x+16\) \((x-4)(x+4)=x^2-16\)
anonymous
  • anonymous
ok

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