Question

please tell me the answer of this question​

Answer 1

Answer:

i) √3(√7 - √3 l

= √3 x √7 - √3 x √3

= √21 - 3

ii) ( √5 - √7 ) √2

= √5 x √2 - √7 x √2

= √10 - √14

iii) ( 3√2 - √3 ) ( 4√3 - √2 )

= 12√2 x√3 - 3√2 x √2 - 4√3 x √3 - √2 x√3

= 12√6 - 3 x 2 - 4 x 3 - √6

= 12√6 - √6 - 6 - 12

= 11√6 - 18

Answer 2

Answer:

(i) root 3 (root 7 - root 3)

root 21 - root 9

root 12

4 root 3

(ii) (root 5 - root 7) root 2

root 10 - root 14

-root 4

- 2

(iii) (3 root 2 - root 3) (4 root 3 - root 2)

3 root 2 ( 4 root 3 - root 2) - root 3 ( 4 root 3 - root 2)

12 root 6 - 6 - 12 + root 6

13 root 6 - 18