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Mathematics 7 Online
OpenStudy (weirdojacker):

Simplifying Radicals Help

OpenStudy (weirdojacker):

OpenStudy (weirdojacker):

the attachment contains the problem

OpenStudy (peachpi):

first reduce the exponent. -3/6 = ?

OpenStudy (weirdojacker):

-1/2

OpenStudy (weirdojacker):

are you there

OpenStudy (peachpi):

then use this rule \[x^{-a}=\frac{1}{x^a}\]

OpenStudy (peachpi):

so basically the exponent of -1/2 becomes positive when you move it to the numerator

OpenStudy (weirdojacker):

so its \[1/\sqrt{x}\]

OpenStudy (peachpi):

no. It's \(\sqrt{x}\) \[\frac{ 1 }{ x^\frac{-3}{6} }=\frac{ 1 }{ x^\frac{-1}{2}}=x^\frac{1}{2}=\sqrt{x}\]

OpenStudy (weirdojacker):

but wouldn't the \[\sqrt{x}\] divide 1

OpenStudy (peachpi):

no. because the exponent is still negative \[\frac{ 1 }{ x^\frac{-1}{2}}=\frac{ 1 }{ \frac{ 1 }{ \sqrt{x} } }=\sqrt{x}\]

OpenStudy (weirdojacker):

Oh ok thanks a lot.

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