Homework Help: Algebra-Can't solve!

Posted by Estela on Monday, March 16, 2009 at 5:59pm.

21 OVER X squared MINUS 6x is equal to 1 OVER x(x-6)(x+5).

I have to rewrite the ration expression as an equivalent rational expression with the given denominator.

Algebra-Can't solve! - Count Iblis, Monday, March 16, 2009 at 6:10pm
x^2 - 6 x = x(x-6)

So, assuming that x is not equal to zero or 6, multiply both sides by
x (x-6):

21 = 1/(x+5) ----->

x = 1/21 - 5 = - 104/21

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