Factorise numerator and denominator and cancel to simplify a rational expression

1. A.
   $(x - 1)$
2. B.
   $(x - 2)$
3. C.
   $(x - 7)$
4. D.
   $(x + 2)$

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1. A.
   1111
2. B.
   2222
3. C.
   3333
4. D.
   6666

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1. A.
   $x^2$
2. B.
   $x^2 - 2$
3. C.
   $x^2 + 2\sqrt{3}$
4. D.
   $x^2 - 2\sqrt{3}$

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