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Radda [10]
2 years ago
10

Solve the following surd given below (1-√5)÷(1+√5)​

Mathematics
1 answer:
Shkiper50 [21]2 years ago
4 0

\dfrac{1-\sqrt 5}{1+\sqrt 5}\\\\\\=\dfrac{\left( 1- \sqrt 5\right)\left( 1- \sqrt 5\right)}{\left( 1+ \sqrt 5\right)\left( 1- \sqrt 5\right)}\\\\\\=\dfrac{\left( 1-\sqrt 5)^2}{1^2 - \left(\sqrt 5 \right)^2}\\\\\\=\dfrac{1+\left(\sqrt 5 \right)^2 -2 \sqrt 5\cdot 1}{1-5}\\\\\\=\dfrac{1+5-2\sqrt 5}{-4}\\\\\\=-\dfrac{6-2\sqrt 5}{4}\\\\\\=-\dfrac{2\left(3-\sqrt 5 \right)}{4}\\\\\\=-\dfrac{3-\sqrt 5}{ 2}\\\\\\=\dfrac{\sqrt 5 -3}{2}

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Tammy Ray purchases 20 file cabinets for $986.99. What is<br> the price per cabinet?
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Answer:

<h2><u>49.34</u></h2>

Step-by-step explanation:

986.99/20=49.3485

Divide 986.99 by 20 which gets you 49.3485 then just around up the 10.

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Answer:

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Step-by-step explanation:

First you need to find f(a) and f(2) separately, then add them together after

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2 years ago
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Step-by-step explanation:

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3 years ago
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2 years ago
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2 years ago
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