Question

write the rationalize factor of 1\√7-√4​

Answer 1

Step-by-step explanation:

The rationalising factor of 1/(-,/7 - -,/4) is (-,/7 + -,/4).

Answer 2

Answer:

$\sqrt{7} + \sqrt{4}$

Step by step explanation:

$\frac{1}{ \sqrt{7} - \sqrt{4} } = \frac{1}{ \sqrt{7} - 2 } \\ ⇒ \: \frac{1}{ \sqrt{7} - 2 } \times \frac{ \sqrt{7} + 2 }{ \sqrt{7} + 2 } \\ ⇒ \: \frac{ \sqrt{7} + 2 }{7 - 4} \\ ⇒ \: \frac{ \sqrt{7} + 2 }{3}$