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Mathematics 7 Online
OpenStudy (anonymous):

Rationalize the denominator

OpenStudy (anonymous):

\[\frac{\sqrt{x^2}}{\sqrt{x+1}}\]

OpenStudy (zepp):

Square that thing.

OpenStudy (anonymous):

\[\frac{\sqrt{x^3+x^2}}{x+1}\]

OpenStudy (anonymous):

\[\frac{\sqrt{x^2}}{\sqrt{x+1}}=\frac{x}{\sqrt{x+1}}=\frac{x(\sqrt{x+1})}{(\sqrt{x+1)^2}} = \frac{x\sqrt{x+1}}{x+1}\]

OpenStudy (zepp):

^

OpenStudy (anonymous):

I don't understand what you did to the numerator.

OpenStudy (anonymous):

In case you need to multiply the numerator\[= \frac{\sqrt{x^2(x+1)}}{x+1}= \frac{\sqrt{x^3+x^2}}{x+1}\]

OpenStudy (anonymous):

I need to...?

OpenStudy (anonymous):

Ahh... bad typing.. I was multiplying the conjugate 'sqrt(x+1)'

OpenStudy (zepp):

\(\huge \frac{\sqrt{x^2}*\sqrt{x+1}}{\sqrt{x+1}*\sqrt{x+1}}=\frac{x\sqrt{x+1}}{x+1}\)

OpenStudy (anonymous):

\[\frac{\sqrt{x^2}}{\sqrt{x+1}}=\frac{x}{\sqrt{x+1}}=\frac{x(\sqrt{x+1})}{(\sqrt{x+1})(\sqrt{x+1})} = \frac{x\sqrt{x+1}}{x+1}\]\[ = \frac{\sqrt{x^2(x+1)}}{x+1}= \frac{\sqrt{x^3+x^2}}{x+1}\]That's what you've got

OpenStudy (anonymous):

Okay!!! I am still contemplating whether or not I should leave it that way but thank you so much for all your help @zepp and @RolyPoly

OpenStudy (zepp):

You are welcome :)

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