Simplifying Complex Fractions | MathHelp.com - Free Educational videos for Students in K-12 | Lumos Learning

Simplifying Complex Fractions | MathHelp.com - Free Educational videos for Students in k-12


Simplifying Complex Fractions | MathHelp.com - By MathHelp.com



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00:0-1 the common denominator for X X squared X and x
00:04 squared is x squared . So to get rid of
00:08 all of our little fractions , we multiply top and
00:12 bottom of the complex fraction by X square . Yeah
00:22 , yeah , X squared times one over X is
00:27 X an X squared times negative two over X squared
00:31 is negative two . In the denominator , X squared
00:35 times one is x squared X squared times negative 12
00:40 over X is negative 12 . X and X squared
00:45 times positive 20 over X squared is positive 20 .
00:53 Notice that our denominator factors , so we have x
00:57 minus two Over X -10 times X -2 . So
01:07 our X -2s cancel . And remember that when the
01:13 numerator cancels out entirely , we leave a one in
01:18 the numerator of our answer . So we have One
01:25 Over X -10 .
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