Question

Rationalise the denominator of 4/(3-√7)​

Answer 1

Answer:

2*(3+√7)

4/(3-√7)

Step-by-step explanation:

Divide and multiply the given fraction by (3+√7)

we get,

4/(3-√7)*((3+√7)/(3-√7)*

then we get,

4*(3+√7)/(3-√7)*(3+√7)

= 4*(3+√7)/(9-7)

= 4*(3+√7)/2

= 2*(3+√7)

Answer 2

Answer:

12+4√7/2

Step-by-step explanation:

=4/3-√7*3+√7/3+√7

=4*(3+√7)/3^2-√7^2

=12+4√7/9-7

=12+4√7/2