3 years ago

What is the simplified form of the following expression?

Mathematics

1 answer:

madam [21]3 years ago

6 0

Answer:

B. 242

Step-by-step explanation:

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3 years ago

Rationalise 1/√7-√3<br>PLEASE GIVE ANSWER IT'S URGENT

IgorLugansk [536]

$\dfrac 1{\sqrt 7- \sqrt 3}\\\\\\=\dfrac{\sqrt 7 + \sqrt 3}{\left ( \sqrt 7 -\sqrt 3\right) \left( \sqrt 7 + \sqrt 3\right)}\\\\\\=\dfrac{\sqrt 7 + \sqrt 3}{\left(\sqrt 7 \right)^2 - \left(\sqrt 3 \right)^2}\\ \\\\=\dfrac{\sqrt 7 + \sqrt 3}{7-3}\\\\\\=\dfrac 14\left(\sqrt 7 + \sqrt 3\right)$