johndeergurl
plz help explain: 3/x^3/1/x^2 ? I will up load a better picture.



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johndeergurl
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mandonut
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dividing by 1/x^2 is the same as mutiply the numerator by x^2

mandonut
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dw:1342752270031:dw

Romero
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Wait that is wrong.

johndeergurl
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I understand that part what I dnt get is do both of my x^2 and x^3 cross out?

Romero
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\[\frac{3}{\frac{x^3}{\frac{1}{x^2}}}=\frac{3}{x^3}\frac{x^2}{1}=\frac{3x^2}{x^3}=\frac{3*x*x}{x*x*x}\]

Romero
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You have two x's on the top and you have three in the bottom right?

johndeergurl
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yes.

Romero
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Two from the top cancel two from the bottom

Romero
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so you are left with zero x's on the top and one x on the bottom

Romero
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understand?

johndeergurl
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so it would just be 3x

Romero
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No I said there will be zero x on the top and one in the bottom of the fraction

johndeergurl
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3/x

Romero
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\[\frac{3*x*x}{x*x*x}=\frac{3}{x}\]

Romero
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yes you are correct good job

johndeergurl
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okay thank you. :) you were very helpful.

Romero
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Sure thing