exam Maths Puzzle Numerical Ability

Evaluate the following expressions.
!-27 + 14!
There is a straight line on both the begining and the end instead of an exclamation mark

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Hi. Thanks in advance for your help. The problem is:

S = p / (q+p)(1-q) ; solve for "q"

I know the answer for this problem is: q = p(1-s) / s(1-p)
But I can't seem to get th Verify the identity using multiple-angle formulas.

1a) cos^(2)3x-sin^(2)3x=cos6x

1b) (sin^(2)2α)/(sin^(2)α)=4-4sin^(2)α