exam Maths Puzzle Numerical Ability

(c^-1)^-12(c^-5)^6/(c^-4)^0(c^3)^-3

answer 1/c^9

How do I get there? I am so lost! please help

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exam Other Question

2x-6, if x<2 Hello im having problems soving these 2 problems its asking me to solve.

let h(x)=4x-x^2. Find such that h(a)= -32

the other problem im having trouble with it

f(x)= 2x/5x^2-20

thanks for your help