This question came up an I'm not sure about it:

You need to simplify leaving the answer in standard form:


I struggle to work it out myself. When I used a calculator it said 12. But you only get 12 if it's $3.464101614^2$. What do you think and how you worked it out.

  • $\begingroup$ Is your expression: $2(\frac{(3-3^2)^2}{3+\sqrt{(4^2-7)}})$? $\endgroup$ – NoChance Feb 11 '16 at 18:21

Assuming your expression is:


Simplifying we get:






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