Question

Plz solve this I want to answe my mam ​

Answer 1

Answer:

Q.6 a = 11/2. ,. b = 63/2

Step-by-step explanation:

rationalisation by √7 + √5

$\frac{(7 \sqrt{5} + 4 \sqrt{7} )( \sqrt{7} + \sqrt{5}) }{ \sqrt{7} - \sqrt{5} ( \sqrt{7} + \sqrt{5} )}$

= (1/2) ( 7√35 + 4√35 + 35+28)

= (11/2) √35 + (63/2)