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October 21, 2014

October 21, 2014

Posted by **esora** on Thursday, May 12, 2011 at 2:22am.

8x+10/x^2+7x-18

please show work!

- pre calc -
**Reiny**, Thursday, May 12, 2011 at 7:24amI am pretty sure you meant:

(8x+10)/(x^2 + 7x - 18)

= (8x+10)/((x+9)(x-2))

let This be

A/(x+9) + B(x-2)

= ( A(x-2) + B(x+9) )/( (x+9)(x-2) )

so ...

A(x-2) + B(x+9) = 8x + 10

sub in A = 2, and B=-9 to find the constanst

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