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