Question

Find a and b values. 1 by 7+4√3 =a-b√3​

Answer 1

Step-by-step explanation:

rationalise the denominator

Answer 2

Step-by-step explanation:

1

--------------=a+b√3

7+4√3

1 7-4√3

-------------×--------------

7+4√3 7-4√3

7-4√3

---------------

7 2-(4√3)2

7-4√3 7-4√3

--------------= --------------

49-16×3 49 -48

=7-4√3

=a=7,b =4