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Hello.
Please help with this maths problem:
[tex]\mathrm{\displaystyle\frac{\sqrt{64xy^{5} } }{\sqrt{8x} } }[/tex]
Due today.
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Thank you in advance. :)


Sagot :

Answer:

[tex]\large{\boxed{\sf 2y^2\sqrt{2y}}}[/tex]

Step-by-step explanation:

Here the given expression to us is ;

[tex]\sf\qquad\longrightarrow \dfrac{\sqrt{64xy^5}}{\sqrt{8x}}[/tex]

Recall that ,

[tex]\sf\qquad\longrightarrow \dfrac{\sqrt{x}}{\sqrt{y}}=\sqrt{\dfrac{x}{y}}[/tex]

On using this , we have ;

[tex]\sf\qquad\longrightarrow \sqrt{\dfrac{\cancel{64}\cancel{x}y^5}{\cancel{8x}}}[/tex]

Simplify ,

[tex]\sf\qquad\longrightarrow \sqrt{ 8 y^5}[/tex]

The prime factorisation of 8 is 2³ . So ;

[tex]\sf\qquad\longrightarrow \sqrt{ (2^3)(y^5)} =\sqrt{(2^2)(2)(y^2)(y^2)(y)}[/tex]

Simplify the square root ,

[tex]\sf\qquad\longrightarrow \pink{ 2y^2\sqrt{2y}} [/tex]

Hence the required answer is 2y²{2y} .

[tex]\\ \rm\rightarrowtail \dfrac{\sqrt{64xy^5}}{\sqrt{8x}}[/tex]

[tex]\\ \rm\rightarrowtail \dfrac{\sqrt{8^2xy^5}}{\sqrt{8x}}[/tex]

Follow the rule

[tex]\boxed{\Large{\sf \dfrac{a^m}{a^n}=a^{m-n}}}[/tex]

[tex]\\ \rm\rightarrowtail \sqrt{8^{2-1}x^{1-1}y^5}[/tex]

[tex]\\ \rm\rightarrowtail \sqrt{8^1x^0y^5}[/tex]

  • a^0=1
  • a^1=a

[tex]\\ \rm\rightarrowtail \sqrt{8y^5}[/tex]

[tex]\\ \rm\rightarrowtail \sqrt{2^2(2)y^2y^3}[/tex]

[tex]\\ \rm\rightarrowtail \sqrt{2^2y(y)(y)(y)}[/tex]

[tex]\\ \rm\rightarrowtail 2y^2\sqrt{2y}[/tex]

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