Math, asked by ann10096xx, 23 days ago

answer fastt !!!!!!!!​

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Answered by shrirampawar249
0

Answer:

Answer:

\begin{gathered} \frac{ \sqrt{5} - 2}{ \sqrt{5} + 2 } - \frac{ \sqrt{5} + 2 }{ \sqrt{5} - 2} = a + b \sqrt{5} \\ \frac{( \sqrt{5} - 2)( \sqrt{5} - 2)}{ (\sqrt{5} + 2)( \sqrt{5} - 2) } - \frac{( \sqrt{5} + 2)( \sqrt{5} + 2) }{ (\sqrt{5} - 2)( \sqrt{5} + 2) } \\ \frac{ { (\sqrt{5} - 2)}^{2} }{ { \sqrt{5} }^{2} - { \sqrt{2} }^{2} } - \frac{ { (\sqrt{5} + 2) }^{2} }{ { \sqrt{5} }^{2} - {2}^{2} } \\ \frac{5 + 4 - 4 \sqrt{5} }{5 - 4} - \frac{5 + 4 + 4 \sqrt{5} }{5 - 4} \\ 9 - 4 \sqrt{5} - 9 - 4 \sqrt{5} \\ - 8\sqrt{5} \\ a = 0 \: \: and \: \: \: b = - 8\end{gathered}

5

+2

5

−2

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−2

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+2

=a+b

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+2)(

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−2)

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5

−2)(

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−2)

(

5

−2)(

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+2)

(

5

+2)(

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+2)

5

2

2

2

(

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−2)

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−2

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+2)

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5−4

5+4−4

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5−4

5+4+4

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9−4

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−9−4

5

−8

5

a=0andb=−8

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