Question

rationalising factor of ✓4- 255 is​

Answer 1

Answer:

1

Step-by-step explanation:

1 is the rationalising factor

Answer 2

Answer: 7 - 4√3

Step by step explanation:

Rationalising Factor:

Rationalising Factor is a term which gives rational number after multiplication from irrational number.

In simple terms,

if we have x + y√z, it's rationalising Factor is x - y√z

Similarly, for x - y√z , it's rationalising Factor is x + y√z

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Coming to your question,

7 + 4√3

It's rationalising Factor is 7 - 4√3

Let's verify:

( 7 + 4√3 ) × ( 7 - 4√3)

= 49 - 48

= 1

Thus, we got rational number after multiplication.

Hence, the rationalising Factor of 7 + 4√3 is 7 - 4√3.

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