Question

Rationalisation of (4 + √11) / (4 - √11) *

Answer 1

Answer:

(4+√11)/(4-√11)

(4+√11)*(4+√11)/(4-√11)(4+√11)

4(4+√11)+√11(4+√11)/4²-(√11)²

8+4√11+4√11+11/8-11

19+8√11/3

I this is the correct answer

Answer 2

Answer:

27 + 32√11

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5

Step-by-step explanation:

Rationalisation of (4 + √11) / (4 - √11)

4 + √11

-----------

4 - √11

Multiplying by (4+√11) on both numerator and denominator

4 + √11 4 + √11

----------- x. -------------

4 - √11 4 + √11

( 4 + √11 ).( 4 + √11 )

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

( 4 - √11) . ( 4 + √11)

16 + 11 + 32√11

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

16 - 11

27 + 32√11

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5