Question

Rationalise 6+2√5 / 6-2√5​

Answer 1

Answer:

4+7√5/4

Step-by-step explanation:

6+2√5/6-2√5×6+2√5/6+2√5

(6+2√5)^2/(6)^2-(2√5)^2

36+24√5+20/36-20

56+24√5/16

4(16+7√5)/16

16+7√5/4

4+7√5/4

Answer 2

Answer:

The answer is (7+3v5)/2

Step-by-step explanation:

The question is 6+2v5/6 -2v5

When rationalising,

6+2v5  *6+2v5  =  36 +20 +24v5 = 56 +24v5

        by

6-2v5   *  6+2v5 = 36 - 20 = 16

When simplifying,

The result will be,  7+3v5/2

Thanks.