exam Maths Puzzle Numerical Ability

Evaluate

C
15 9

Answers to this question would be much obliged..the 15 is supposed to be on left side of the C,sorry.

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exam Other Question

solve using long division

(2x^2+10x+12)divided by (x+3)
Given that (2-y)^3=8-12y+6y^2-y^3 find (2-y)^4

I really dont know how to start it!