Question

I will mark you brainliest ONLY if you answer correct
The topic is surds

Answer 1

Step-by-step explanation:

The Venn diagram shows three types of numbers: odd (O), even (E), and prime (P).

Which is represented by Ø?

E ∩ P

O ⋃ P

E ∩ O

O ⋃ E

Answer 2

Question :-

Write in the form b√c

$\rm \dfrac{20}{\sqrt{5}}$

Answer :-

$\rm \dfrac{20}{\sqrt{5}}$

By rationalisation :-

$\rm \implies \dfrac{20}{\sqrt{5}} \times \dfrac{\sqrt{5}}{\sqrt{5}}$

$\rm \implies \dfrac{20 \times \sqrt{5}}{\sqrt{5} \times \sqrt{5}}$

$\rm \implies \dfrac{20\sqrt{5}}{(\sqrt{5})^{2}}$

$\rm \implies \dfrac{20\sqrt{5}}{5}$

$\rm \implies 4\sqrt{5}$

So, we have write it in form of b√c where b = 4 and c = 5.