Question

THE NUMBER OBTAINED ON RATIONALISNG THE DENOMINATOR OF 1/√7-2 .​

Answer 1

Step-by-step explanation:

firstly, change the sign of the denominator , i.e √7 - √2 will become √7 + 2 , so multiply this term both with numerator and denominator. Multiply the terms , and we know that (a+b)(a-b) = a² - b² , use this identity for denominator!

Answer 2

Answer:

$\frac{\sqrt{7} +2}{3}$

Step-by-step explanation:

$\frac{1}{\sqrt{7}-2 } =\frac{1(\sqrt{7}+2)}{(\sqrt{7}-2)(\sqrt{7}+2) } =\frac{\sqrt{7}+2 }{7-4} =\frac{\sqrt{7}+2 }{3}$

Hope It Helps :)