Question

plz.... help to give answer ....for both questions ​

Answer 1

first answer is 3

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Answer 2

Answer:

1-$\sqrt{3}$

2-$\frac{\left(5-\sqrt{2}\right)\sqrt{5+\sqrt{2}}-\sqrt{5}\cdot \:23-\sqrt{2}\cdot \:23}{23}$

Step-by-step explanation:

First:

⇒√300

⇒√100*3

⇒√10²*3

⇒10*√3

→ Rationalising factor is √3

Second:

⇒1/{√5+(√2)}*{{√5-(√2)}/{√5-(√2)}

⇒$\sqrt{5}=\frac{\sqrt{5}\cdot \:23}{23},\:\sqrt{2}=\frac{\sqrt{2}\cdot \:23}{23}$ ..........convert

⇒$\frac{\left(5-\sqrt{2}\right)\sqrt{5+\sqrt{2}}}{23}-\frac{\sqrt{5}\cdot \:23}{23}-\frac{\sqrt{2}\cdot \:23}{23}$

⇒$\frac{\left(5-\sqrt{2}\right)\sqrt{5+\sqrt{2}}-\sqrt{5}\cdot \:23-\sqrt{2}\cdot \:23}{23}$............{$\quad \frac{a}{c}\pm \frac{b}{c}=\frac{a\pm \:b}{c}$}-used

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