Question

rationalisation factor of 7-3*root5

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Answer 1

Step-by-step explanation:

Rationalising factor of

7

+

3

is

7

−

3

.

Answer 2

Answer:My Answer is The rationalising factor of 7 - 3√5 is 7 + 3√5.

Step-by-step explanation:      Answer:

7 + 3√5.

Step-by-step explanation:

Rationalising factor is a term with which an irrational number gives a rational number after multiplication.

Also, If we have a number a + b√c then its Rationalising factor will be a - b√c,

Similarly, for a - b√c, Rationalising factor will be a + b√c.Because 7 - 3√5, Thus, by the above definition, The rationalising factor of 7 - 3√5 is 7 + 3√5.

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