Math, asked by arulkumaran5141, 15 days ago

What will it give us when we subtract root 1 from root 5

Answers

Answered by Abhinav1783
1

Answer:

Hey friend,

Here is answer you were looking for:

\begin{gathered} \frac{ (\sqrt{5)} - 1 }{ (\sqrt{5}) + 1 } + \frac{( \sqrt{5}) + 1 }{( \sqrt{5}) - 1 } \\ \\ = \frac{( \sqrt{5} ) - 1}{( \sqrt{5}) + 1 } \times \frac{( \sqrt{5}) - 1 }{( \sqrt{5} ) - 1} + \\ \frac{( \sqrt{5} ) + 1}{( \sqrt{5} ) - 1} \times \frac{( \sqrt{5}) + 1 }{( \sqrt{5} ) + 1} \\ \\ = \frac{( \sqrt{5})^{2} + (1)^{2} + 2 \times ( \sqrt{5 )} \times 1 }{( \sqrt{5} )^{2} - (1)^{2} } \\ + \frac{( \sqrt{5})^{2} + {(1)}^{2} + 2 \times ( \sqrt{5}) \times 1 }{( \sqrt{5})^{2} - (1)^{2} } \\ \\ = \frac{5 + 1 - 2 \sqrt{5} }{5 - 1} + \frac{5 + 1 + 2 \sqrt{5} }{5 - 1} \\ \\ = \frac{6 - 2 \sqrt{5} + 6 + 2 \sqrt{5} }{4} \\ \\ = \frac{6 + 6}{4} \\ \\ = \frac{12}{4} \\ \\ = 3\end{gathered}

(

5

)+1

(

5)

−1

+

(

5

)−1

(

5

)+1

=

(

5

)+1

(

5

)−1

×

(

5

)−1

(

5

)−1

+

(

5

)−1

(

5

)+1

×

(

5

)+1

(

5

)+1

=

(

5

)

2

−(1)

2

(

5

)

2

+(1)

2

+2×(

5)

×1

+

(

5

)

2

−(1)

2

(

5

)

2

+(1)

2

+2×(

5

)×1

=

5−1

5+1−2

5

+

5−1

5+1+2

5

=

4

6−2

5

+6+2

5

=

4

6+6

=

4

12

=3

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