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Defiance
 one year ago
Will medal...
2x9/x^2 x 6 = A/x3 + B/x+2
/ as in fraction and ^2 as squared
Defiance
 one year ago
Will medal... 2x9/x^2 x 6 = A/x3 + B/x+2 / as in fraction and ^2 as squared

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Defiance
 one year ago
Best ResponseYou've already chosen the best response.1Ganeshie8, can you help?

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1you may use the cover up method http://www.mathcs.gordon.edu/courses/ma225/handouts/heavyside.pdf

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1\[\dfrac{2x9}{x^2 x 6} = \dfrac{A}{x3} + \dfrac{B}{x+2} \] \[\dfrac{2x9}{(x3)(x+2)} = \dfrac{A}{x3} + \dfrac{B}{x+2} \]

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1Look at the "left hand side" expression. Cover up \(x3\) and plugin \(x=3\), what do you get ?

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1\[\dfrac{2x9}{(x+2)} \] plugin x=3 above

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1(2(3)9)/5 (69)/5 = ?

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1Lets work it step by step, shall we ? so far we have \(A=\dfrac{3}{5}\)

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1Next, cover up \(x+2\) and plugin \(x=2\) in : \[\dfrac{2x9}{(x3)} \]

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1Yep! you may double check with wolfram http://www.wolframalpha.com/input/?i=partial+fractions+%282x9%29%2F%28x%5E2+x+6%29
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