Question

Anyone please help surds questions

Answer 1

Answer:

$2\sqrt{21}$

Step-by-step explanation:

We can multiply the two irrational terms, getting $\sqrt{84}$.

We see that 4 is a factor of 84, so we can rewrite $\sqrt{84}$ as $\sqrt{4 (21) }$. We can take the 4 out, getting $2\sqrt{21}$.