Question

9. If a and b are rational numbers find the value of a and b=a+b√2

8+√8

2-√2​

Answer 1

Step-by-step explanation:

2

5

−3

3

5

+

3

=a−b

15

(2

5

−3

3

)(2

5

+3

3

)

(

5

+

3

)(2

5

+3

3

)

=a+b

15

(2

15

)

2

−(3

3

)

2

2×5+3

15

+2

15

+9

=a−b

15

20−27

19+5

15

=a−b

15

7

−19

7

−5

15

=a−b

15