exam Maths Puzzle Numerical Ability

For the function f(x)=x^2-2x+1
(a)find f(0)

(b)solve f(x)=0

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exam Other Question

(x/x+1) - (2/x-1) - 1

please explain/show this to me... i tried doing it and again, only got very partial credit . i dont understand the whole LCD thing with the negatives... 8.64 Biting an unpopped kernel of popcorn hurts! As an experiment, a self-confessed connoisseur of
cheap popcorn carefully counted 773 kernels and put them in a popper. After popp