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Mathematics 10 Online
Erisgoddess:

Simplify. https://mooreps.owschools.com/media/g_alg01_2016/8/2q10.gif

snowflake0531:

@AZ

jhonyy9:

\[\frac{ x }{ y }\sqrt{\frac{ 1 }{ 2y }} = \frac{ x }{ y }\frac{ 1 }{ \sqrt{2y} }= ?\] any idea now ?

Erisgoddess:

not really no

jhonyy9:

\(\color{#0cbb34}{\text{Originally Posted by}}\) @jhonyy9 \[\frac{ x }{ y }\sqrt{\frac{ 1 }{ 2y }} = \frac{ x }{ y }×\frac{ 1 }{ \sqrt{2y} }= ?\] any idea now ? \(\color{#0cbb34}{\text{End of Quote}}\)

jhonyy9:

multiplie numerator by numerator and denominator by denominator

hhanan:

Simplify \[\sqrt{\frac{ 1 }{ 2y}}\] to \[\frac{ \sqrt{1} }{ \sqrt{2y} }\] and then Simplify \[\sqrt{1}\] to 1 \[\frac{ yx1 }{ x \sqrt{2y} }\] y×1 to y = \[\frac{ y }{ x \sqrt{2y}}\]

Erisgoddess:

oh ok

jhonyy9:

\(\color{#0cbb34}{\text{Originally Posted by}}\) @hhanan Simplify \[\sqrt{\frac{ 1 }{ 2y}}\] to \[\frac{ \sqrt{1} }{ \sqrt{2y} }\] and then Simplify \[\sqrt{1}\] to 1 \[\frac{ yx1 }{ x \sqrt{2y} }\] y×1 to y = \[\frac{ y }{ x \sqrt{2y}}\] \(\color{#0cbb34}{\text{End of Quote}}\) how you get this y in numerator ?

jhonyy9:

\(\color{#0cbb34}{\text{Originally Posted by}}\) @jhonyy9 \(\color{#0cbb34}{\text{Originally Posted by}}\) @jhonyy9 \[\frac{ y }{ x}\sqrt{\frac{ 1 }{ 2y }} = \frac{ y}{ x }×\frac{ 1 }{ \sqrt{2y} }= ?\] any idea now ? \(\color{#0cbb34}{\text{End of Quote}}\) \(\color{#0cbb34}{\text{End of Quote}}\)

hhanan:

because for the rule a/bxc/d=ac/bd and then Simplify yx1 to y ​

jhonyy9:

yes my bad the first term is y/x not how i ve wrote x/y

jhonyy9:

but you can simplifie it again how you eliminate the radical from denominator ?

jhonyy9:

@hhanan

jhonyy9:

\(\color{#0cbb34}{\text{Originally Posted by}}\) @jhonyy9 \(\color{#0cbb34}{\text{Originally Posted by}}\) @jhonyy9 \(\color{#0cbb34}{\text{Originally Posted by}}\) @hhanan Simplify \[\sqrt{\frac{ 1 }{ 2y}}\] to \[\frac{ \sqrt{1} }{ \sqrt{2y} }\] and then Simplify \[\sqrt{1}\] to 1 \[\frac{ yx1 }{ x \sqrt{2y} }\] y×1 to y = \[\frac{ y }{ x \sqrt{2y}}\] \(\color{#0cbb34}{\text{End of Quote}}\) how you get this y in numerator ? \(\color{#0cbb34}{\text{End of Quote}}\) multiplie top and bottom by sqrt2y so what will get ? \(\color{#0cbb34}{\text{End of Quote}}\)

hhanan:

\[2x \sqrt{y}\]

jhonyy9:

\[\frac{ y \sqrt{2y} }{ x \sqrt{2y}*\sqrt{2y} }= ?\]

jhonyy9:

\[= \frac{ y \sqrt{2y} }{ 2xy } = \frac{ \sqrt{2y} }{ 2x }\]

jhonyy9:

@Erisgoddes questions ?

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